[2024年05月] ベストOracle Database学習ガイドは1Z0-770試験問題集
1Z0-770認定ガイド問題と解答トレーニング
Oracle APEX Developer Professionalになるためには、1Z0-770認定試験に合格する必要があります。この試験は、105分間に60の多肢選択問題に答える必要があります。この試験は英語、日本語、中国語など複数の言語で受験できます。試験料は245ドルで、Pearson VUEテストセンターで受験するか、自宅やオフィスからオンラインで受験することができます。この試験は、Oracle APEXを使用する開発者、アーキテクト、コンサルタントが、この技術における専門知識を証明するための貴重な資格です。
質問 # 23
Which of the following are preconfigured authentication schemes?
- A. Social Sign In
- B. All of them
- C. LDAP Directory
- D. Open Door Credentials
- E. HTTP Header Variables
正解：B
解説：
Explanation
Oracle APEX provides several preconfigured authentication schemes that follow a standard behavior for authentication and session management. You can select a preconfigured authentication scheme from the gallery when you create an authentication scheme for your application. The preconfigured authentication schemes are:
Open Door Credentials: This scheme enables anyone to access your application using a built-in login page that captures a user name.
LDAP Directory: This scheme authenticates a user and password with an authentication request to a LDAP server.
HTTP Header Variable: This scheme authenticates users externally by storing the username in a HTTP Header variable set by the web server.
Social Sign-In: This scheme supports authentication with Google, Facebook, and other social networks that support OpenID Connector OAuth2 standards.
Oracle APEX Accounts: This scheme authenticates users against Oracle APEX user accounts that are created within and managed in the APEX user repository.
Custom Authentication: This scheme allows you to create a custom authentication scheme from scratch to have complete control over your authentication interface.
Database Accounts: This scheme authenticates users using database schema accounts.
Oracle Application Server Single Sign-On Server: This scheme delegates authentication to the Oracle AS Single Sign-On (SSO) Server.
SAML Sign-In: This scheme delegates authentication to the Security Assertion Markup Language (SAML) Sign In authentication scheme.
質問 # 24
Choose the three different ways in which you can add a checkbox to a page.
- A. Right click Body in the Rendering Tree and add a New Page Item as Checkbox Type.
- B. Use the context sensitive menu in the Gallery pane.
- C. Drag and drop the checkbox item into the Layout pane
- D. Add a checkbox from the Property Editor
正解：A、B、C
解説：
Explanation
There are three different ways in which you can add a checkbox to a page in APEX:
Drag and drop the checkbox item into the Layout pane: In Page Designer, you can drag and drop items from the Gallery pane into the Layout pane to create them on your page. To create a checkbox item, expand the Items node in the Gallery pane and drag and drop Checkbox into the Layout pane.
Right click Body in the Rendering Tree and add a New Page Item as Checkbox Type: In Page Designer, you can right click any node in the Rendering tree andselect Create to create a new component under that node. To create a checkbox item under the Body node, right click Body and select Create > New Page Item > Checkbox.
Use the context sensitive menu in the Gallery pane: In Page Designer, you can use the context sensitive menu in the Gallery pane to create items on your page. To create a checkbox item using this method, expand the Items node in the Gallery pane and right click Checkbox. Then select Create Checkbox.
質問 # 25
Which statement is true about session state management in Oracle APEX?
- A. A user cannot run multiple instances of an application simultaneously in different browser programs.
- B. APEX Sessions are logically and physically distinct from Oracle database sessions used to service page requests.
- C. Multiple number of sessions cannot exist in the database at the same time
正解：B
解説：
Explanation
Session state management is a feature that enables developers to store and retrieve values for a user as the user navigates between different application pages. A session is a logical construct that establishes persistence (or stateful behavior) across page views. Each session is assigned a unique identifier (or session ID). The statement that is true about session state management in Oracle APEX is:
APEX Sessions are logically and physically distinct from Oracle database sessions used to service page requests. APEX Sessions are stored in memory within an Application Express engine process while Oracle database sessions are stored in memory within an Oracle database process. The other statements are false because:
A user can run multiple instances of an application simultaneously in different browser programs by using different session IDs.
Multiple number of sessions can exist in the database at the same time for different users or applications.
Verified References: [Understanding Session State Management - Oracle Help Center], [What Is a Session? - Oracle Help Center]
質問 # 26
Which two are true about Oracle APEX?
- A. Performs the data processing in a middle-tier server
- B. Is declarative. It requires no code generation.
- C. Requires developers to be proficient in Java, Python and other programming languages.
- D. Requires no additional client software. A web browser is the app development IDE.
正解：B、D
解説：
Explanation
Oracle APEX is a low-code development platform that enables you to build database-centric web applications using only a web browser. Oracle APEX has the following features:
Requires no additional client software. A web browser is the app development IDE: You can use any modern web browser to access the Oracle APEX development environment and build your applications.
You do not need to install or configure any additional software or tools on your client machine.
Is declarative. It requires no code generation: You can use declarative tools, visual editors, drag-and-drop components, and pre-built templates to define your application logic, user interface, security, and integration features. You do not need to write or generate any code for your applications.
The other options are incorrect because:
Performs the data processing in a middle-tier server: Oracle APEX performs the data processing in the database server. It uses SQL and PL/SQL to access and manipulate the data stored in the database. It does not rely on any middle-tier server or framework for data processing.
Requires developers to be proficient in Java, Python and other programming languages: Oracle APEX does not require developers to be proficient in Java, Python or other programming languages. It uses SQL and PL/SQL as the primarylanguages for data processing. It also supports HTML, CSS, JavaScript, and jQuery for user interface development.
Verified References: [About Oracle APEX] [Oracle APEX Architecture]
質問 # 27
Choose the two statements that are TRUE about an Interactive Report. As a developer:
- A. You can customize the Actions menu to include or exclude certain options.
- B. You can customize the pagination
- C. You can modify the data in the report after running the app
- D. You cannot modify the report source query
正解：B、C
質問 # 28
What are the three features of a calendar in APEX?
- A. Previous - Navigates to the previous month.
- B. Next - Navigates to the next month.
- C. Reminders - Displays the reminders set by the users
- D. Month, Week, Day - Displays a monthly, weekly and daily view.
正解：A、B、D
解説：
Explanation
A calendar is a type of component that enables users to view and manage data based on dates. A calendar can display data in different views, such as monthly, weekly, daily, or list. Users can also interact with the calendar by creating, editing, or deleting events, or by using drag and drop functionality. Three of the features of a calendar in Oracle APEX are:
Next - Navigates to the next month. This feature allows users to move forward in time and see the events for the following month.
Previous - Navigates to the previous month. This feature allows users to move backward in time and see the events for the previous month.
Month, Week, Day - Displays a monthly, weekly and daily view. These features allow users to switch between different views of the calendar and see the events for a specific month, week, or day.
質問 # 29
What three are the building blocks of Approvals Component?
- A. Task Details Page
- B. Unified Task List
- C. Automations
- D. Task Definition
正解：A、B、D
解説：
Explanation
The Approvals Component is Oracle APEX's new offering as part of the 22.1 Release. It allows seamless management of approvals across APEX Applications. Approvals are commonly used in business situations involving Expense Reimbursements, Leave Requests, Purchase Requisitions, On-boarding of Employees to name a few. The Approvals Component provides the following building blocks for the approvals functionality:
Task Definition: A shared component for configuring task parameters, participants, and actions. A task definition defines the template for creating tasks based on a specific type of approval request, such as Leave Approval or Purchase Requisition. A task definition specifies the data source, display attributes, potential owners, business administrators, and available actions for the tasks.
Task Details Page: A page that shows task details, which can include metadata, history, comments, and actions. A task details page allows users to view and take action on a specific task, such as approve, reject, reassign, or escalate. A task details page can be created using the Create Page Wizard or the Quick SQL tool in APEX.
Unified Task List: A page type in the Create Page Wizard, used to create a summary of a user's tasks that functions like an inbox. A unified task list allows users to see and manage all their tasks in one place. Users can filter, sort, search, claim, release, or open tasks from the unified task list.
質問 # 30
Select the three types of Card Layout you can create in APEX.
- A. Horizontal(Row)
- B. Vertical(Column)
- C. Grid
- D. Float
正解：A、C、D
解説：
Explanation
You can create two types of card layout in APEX: Float and Grid. Float layout displays cards in a single row that wraps to the next row when the available space is filled. Grid layout displays cards in a fixed number of columns that can be responsive to the screen size1. Vertical and Horizontal are not valid card layout types in APEX.
質問 # 31
Choose the two options provided in a Column Heading menu of an Interactive Report.
- A. Control Break
- B. Delete
- C. Hide
- D. Group By
正解：A、C
解説：
Explanation
The Column Heading menu of an Interactive Report provides various options to customize the report based on the selected column. The options include:
Control Break: This option allows you to create a control break on the column, which groups the rows by the column values and inserts a header and a footer for each group. You can also apply aggregate functions, such as sum, count, or average, to the footer of each group.
Hide: This option allows you to hide the column from the report, which reduces the clutter and improves the readability of the report. You can also show the hidden columns by using the Columns option in the Actions menu.
The other options are incorrect because:
Group By: This option is not provided in the Column Heading menu of an Interactive Report. It is provided in the Actions menu of an Interactive Report. It allows you to group the rows by one or more columns and display the result in a chart or a pivot table.
Delete: This option is not provided in the Column Heading menu of an Interactive Report. It is provided in the Data option in the Actions menu of an Interactive Report. It allows you to delete one or more rows from the report and the underlying table.
Verified References: [Customizing Interactive Reports] [Column Heading Menu]
質問 # 32
Which two actions can you perform using the Object Browser?
- A. Create a lookup table based on a column in the current table.
- B. Restore dropped database objects.
- C. Browse database objects of the current schema.
- D. Create and run SQL scripts.
- E. Export and import SQL scripts.
正解：A、C
解説：
Explanation
Object Browser is a utility in SQL Workshop that enables developers to browse, create, and edit objects in a database. Some of the actions that you can perform using Object Browser are:
Browse database objects of the current schema. You can view the details of an object by selecting it from the Object Tree and then clicking the different object detail tabs.
Create a lookup table based on a column in the current table. You can use the Create Lookup Table option in the Column Details tab to create a new table that stores the distinct values of the selected column and a foreign key constraint to reference it. You cannot restore dropped database objects, create and run SQL scripts, or export and import SQL scripts using Object Browser. You can use other utilities in SQL Workshop to perform these actions, such as Recycle Bin,SQL Commands, and SQL Scripts.
Verified References: [Managing Database Objects with Object Browser - Oracle Help Center], [Creating Lookup Tables - Oracle Help Center]
質問 # 33
Which three of the following statements are TRUE about Data Synchronization?
- A. You must trigger Data Synchronization manually
- B. Helps in Providing efficient reporting on large data sets coming from a REST service
- C. Data Synchronization enables developers to automatically sync the contents of a local table with the data from a REST service.
- D. APEX can create the local table based on the visible columns in the REST Data Source Data Profile.
正解：B、C、D
解説：
Explanation
Data Synchronization enables developers to automatically sync the contents of a local table with the data from a REST service. APEX invokes the REST service defined in the REST Data Source, downloads all data and synchronizes it to a local table6. Data Synchronization has several benefits, such as:
APEX can create the local table based on the visible columns in the REST Data Source Data Profile. Since the table is physically available in the database schema, developers can add indexes, change physical properties, or even add more columns6.
Data Synchronization helps in providing efficient reporting on large data sets coming from a REST service. Some REST services can return large amounts of result data that include pagination. If a reporting requirement needs larger data sets, this would lead to multiple HTTP requests and poorer response times. Also, no indexes or other database features can be used to speed up reporting queries. In this case, synchronizing the remote data to a local table and having the reports working on local tables can improve performance and user experience6.
Data Synchronization can also collect data from REST services for consumption by PL/SQL packages or other logic. If data from the REST service is replicated to local tables, developers will be able to perform all sorts of processing and also generate different types of reports6.
You do not have to trigger Data Synchronization manually, as you can also schedule it to run periodically using a DBMS_SCHEDULER expression6.
質問 # 34
Examine this code entered in Quick SQL:
emp_salary
name vc255
salary num
commission yn/check TRUE, FALSE
Which statement is true about the commission yn column?
- A. It will restrict acceptable values to Y or N.
- B. It will default to TRUE.
- C. It will restrict acceptable values to TRUE or FALSE.
- D. It will default to FALSE.
正解：C
解説：
Explanation
The commission yn column will restrict acceptable values to TRUE or FALSE because of the /check modifier in the column name. This modifier adds a check constraint to the column based on the values specified after it.
The yn suffix indicates that the column is of type VARCHAR2(1). The other options are incorrect because they do not reflect the effect of the /check modifier or the yn suffix. Verified References: Using Quick SQLAbout Quick SQL Shorthand Syntax
質問 # 35
What three components must be considered whilemigrating an APEX app betweenenvironments?
- A. Move the images
- B. Move the application definition and all associated files
- C. Move the database objects
- D. Move the sessions data
正解：A、B、C
解説：
Explanation
To migrate an APEX app between environments, such as from development to production, you need to consider three components that make up an APEX app:
Database objects: These are the tables, views, procedures, functions, packages, triggers, sequences, synonyms, and other schema objects that store or manipulate the data used by the app. You need to move these objects from the source schema to the target schema using tools such as SQL Developer, Data Pump Export/Import, or Data Workshop.
Images: These are the static files, such as images, CSS files, JavaScript files, or PDF files, that are used by the app for display or download purposes. You need to move these files from the source web server to the target web server using tools such as FTP, SCP, or File Explorer.
Application definition and all associated files: These are the metadata files that define the app components, such as pages, regions, items, buttons, processes, validations, computations, dynamic actions, shared components, and so on. You also need to include any supporting object definitions or data scripts that are used to create or populate database objects for the app. You need to move these files from the source APEX instance to the target APEX instance using tools such as App Builder Export/Import or One-click Remote Application Deployment.
質問 # 36
You use the Create Page Wizard to create a faceted search page on the EMP table. What is the default report type generated for this page?
- A. Interactive Report
- B. Classic Report
- C. Interactive Grid
- D. Column Toggle Report
正解：B
解説：
Explanation
When you use the Create Page Wizard to create a faceted search page on any table or SQL query, such as EMP table, APEX generates a classic report region as default report type for this page. A classic report region displays data from a SQL query or PL/SQL function returning a SQL query in tabular format. A faceted search page also contains a region of Faceted Search type, which holds one or more facets that allow end users to filter data by applying one or more facets. Verified References: Creating Faceted Search Pages - Oracle Help Center, Creating Classic Reports - Oracle Help Center
質問 # 37
Which two tasks can you perform using App Builder?
- A. Create and manage apps.
- B. Create join queries using drag and drop.
- C. Import previously exported apps.
- D. Create and manage database objects.
- E. Generate data definition language (DDL) statements from the Oracle data dictionary.
正解：A、C
解説：
Explanation
App Builder is the main interface of Oracle APEX that allows developers to create and manage web applications. App Builder provides various features and tools to design, develop, test, debug, deploy, and maintain applications. Some of the tasks that you can perform using App Builder are importing previously exported apps, creating new apps from scratch or from predefined templates or blueprints, editing app properties and attributes, adding pages and regions, creating shared components, running and debugging apps, exporting apps to files or workspaces, etc. You cannot create join queries using drag and drop or generate DDL statements from the Oracle data dictionary using App Builder. Verified References: [Using App Builder
- Oracle Help Center], [App Builder Concepts - Oracle Help Center]
質問 # 38
Which three are the main components of APEX workspace homepage?
- A. Gallery
- B. App Builder
- C. SQL Workshop
- D. RESTful Services
正解：A、B、C
解説：
Explanation
The main components of an APEX workspace homepage are:
Gallery: This component displays various sample applications, blueprints, plug-ins, themes, and learning resources that you can use to get started with Oracle APEX.
SQL Workshop: This component allows you to view and manage the database objects in your schema, such as tables, views, indexes, etc. You can also use this component to run SQL queries or scripts, load or unload data from the database, generate DDL statements, view object reports, and restore dropped objects.
App Builder: This component allows you to create and edit your applications using the Create Application Wizard or the Page Designer. You can also use this component to import or export applications from files or URLs, run or debug applications, manage application settings, and access various utilities.
The other option is incorrect because:
RESTful Services: This component is not part of the APEX workspace homepage. It is part of the SQL Workshop component. It allows you to create and manage RESTful web services based on your database objects or SQL queries.
Verified References: [About the Workspace Home Page] [About SQL Workshop] [About App Builder]
質問 # 39
Which two actions enable "hide and show" behavior of a data series in a bar chart when its corresponding legend item is clicked?
- A. Setting the on Data Change attribute value to slide to Left
- B. Setting the Hide and Show Behavior attribute value to Rescale
- C. Setting the Hide and Show Behavior attribute value to No Rescaling
- D. Setting the Hide and Show Behavior attribute value to None
正解：B、C
解説：
Explanation
A bar chart is a type of chart that displays data as horizontal or vertical bars with lengths proportional to the values they represent. A bar chart can have one or more data series, which are groups of data points that share the same color and legend item. To enable "hide and show" behavior of a data series in a bar chart when its corresponding legend item is clicked, you need to set the Hide and Show Behavior attribute value to either Rescale or No Rescaling. The Hide and Show Behavior attribute determines how the chart behaves when a data series is hidden or shown by clicking on its legend item. The possible values are:
None: The chart does not support hiding or showing data series by clicking on legend items.
Rescale: The chart supports hiding or showing data series by clicking on legend items, and rescales the axes accordingly.
No Rescaling: The chart supports hiding or showing data series by clicking on legend items, but does not rescale the axes. Setting the on Data Change attribute value to slide to Left will not affect the "hide and show" behavior of a data series in a bar chart. This attribute determines how the chart behaves when new data is loaded, such as when using dynamic actions or refresh actions. The possible values are:
None: The chart does not animate when new data is loaded.
Slide to Left: The chart slides to the left when new data is loaded.
Slide to Right: The chart slides to the right when new data is loaded. Verified References: [Creating Bar Charts - Oracle Help Center], [Bar Chart Attributes - Oracle Help Center]
質問 # 40
Which two statements are true about creating and managing an APEX Workspace?
- A. You can create only two workspaces in an APEX Service(APEX Application Development)instance.
- B. During workspace creation, you can associate the workspace with an existing databaseschema.
- C. A workspace can be associated with only one schema.
- D. A workspace enables multiple users to work within the same Oracle APEX installation.
- E. New schemas cannot be created during workspace creation.
正解：B、D
解説：
Explanation
A workspace is a logical work area that enables multiple users to work within the same Oracle APEX installation while keeping their objects, data, and applications private. Creating and managing an APEX workspace involves the following statements:
During workspace creation, you can associate the workspace with an existing database schema or create a new schema for the workspace. A schema is a collection of database objects such as tables, views, indexes, etc. that belong to a user.
A workspace enables multiple users to work within the same Oracle APEX installation. Each user can have a different role and privilege in the workspace, such as workspace administrator, developer, or end user.
A workspace can be associated with one or more schemas. You can add or remove schemas from a workspace after it is created.
You can create as many workspaces as you need in an APEX Service (APEX Application Development) instance. There is no limit on the number of workspaces per instance.
Verified References: Managing WorkspacesAbout Workspaces
質問 # 41
Which two are true when the Edit option is NOT enabled for an Interactive Grid?
- A. The end user cannot edit the underlying data in the database
- B. The end user cannot create charts
- C. The end user can customize the report
- D. The end user can edit the underlying data in the database
正解：A、C
解説：
Explanation
An interactive grid is a component that displays data in a tabular format and allows users to perform various actions on the data, such as sorting, filtering, grouping, highlighting, and editing. However, the editing feature is optional and can be enabled or disabled by the developer. When the Edit option is not enabled for an interactive grid, the following statements are true:
The end user cannot edit the underlying data in the database. The interactive grid becomes read-only and does not allow users to add, modify, or delete rows. The Add Row and Save buttons are hidden from the toolbar and the cells are not editable.
The end user can customize the report. The interactive grid still allows users to change the appearance and behavior of the report using the Actions menu. Users can perform actions such as changing column order, resizing column width, hiding or showing columns, applying filters or highlights, creating control breaks or charts, and saving reports.
質問 # 42
Select the three types of Facets you can create in APEX.
- A. Text Area
- B. Checkbox Group
- C. Range
- D. Input Field
正解：B、C、D
解説：
Explanation
A facet is a type of component that provides a set of display values and return values for a faceted search region or a smart filters region. A facet can be based on either static values or dynamic values from a list of values (LOV). A facet can also have different display styles depending on its type and settings. Three of the types of facets that you can create in APEX are:
Range: A range facet displays numeric values in either buckets or sliders that users can select or adjust to filter the search results. A range facet can have either static values or dynamic values based on an LOV or SQL query.
Checkbox Group: A checkbox group facet displays multiple options that users can select or deselect to filter the search results. A checkbox group facet can have either static values or dynamic values based on an LOV or SQL query.
Input Field: An input field facet displays a text field that users can enter text to filter the search results.
An input field facet does not have any values but uses an operator to compare the user input with the data.
質問 # 43
You can create an APEX workspace and build APEX apps on which of the following platforms?
- A. Oracle Autonomous Cloud
- B. Microsoft Azure
- C. Oracle XE
- D. Amazon RDS
- E. All of the above
正解：E
解説：
Explanation
You can create an APEX workspace and build APEX apps on any of the following platforms:
Oracle Autonomous Cloud: This is a cloud platform that provides various services such as Autonomous Database, Oracle Cloud Infrastructure, and Oracle APEX Application Development. You can create an APEX workspace and build APEX apps on an Autonomous Database instance or an APEX Service instance.
Oracle XE: This is a free edition of Oracle Database that supports up to 12 GB of user data. You can install Oracle XE on your local machine and use it to create an APEX workspace and build APEX apps.
Amazon RDS: This is a cloud service that provides managed relational databases. You can create an APEX workspace and build APEX apps on an Amazon RDS for Oracle instance that supports Oracle APEX.
Microsoft Azure: This is a cloud platform that provides various services such as virtual machines, storage, and networking. You can create an APEX workspace and build APEX apps on a Microsoft Azure VM that runs Oracle Database and Oracle APEX.
Verified References: Oracle Autonomous CloudOracle XEAmazon RDSMicrosoft Azure
質問 # 44
Which two among the following are TRUE about Low Code Apps?
- A. Expensive
- B. Scalable
- C. Provide Rich Functionality with Less Code
- D. Not Mobile Friendly
正解：B、C
解説：
Explanation
Low Code Apps are applications that are developed using a low-code development platform such as Oracle APEX. Low Code Apps have the following characteristics:
Scalable: Low Code Apps can handle large volumes of data and users without compromising performance or reliability. They can also leverage the scalability features of the underlying database or cloud platform.
Provide Rich Functionality with Less Code: Low Code Apps can provide complex business logic, user interface, security, and integration features with minimal or no coding. They use declarative tools, visual editors, drag-and-drop components, and pre-built templates to speed up the development process.
The other options are incorrect because:
Not Mobile Friendly: Low Code Apps are mobile friendly by default. They use responsive design techniques to adapt to different screen sizes and orientations. They also support touch gestures, device features, and offline capabilities.
Expensive: Low Code Apps are not expensive to develop or maintain. They reduce the cost of development by requiring less time, resources, and skills. They also reduce the cost of maintenance by simplifying the deployment, testing, and debugging processes.
Verified References: [What is Low Code?] [Why Choose Oracle APEX?]
質問 # 45
When a table or a SQL query returns many rows, an Interactive Grid is best displayed to the user with pagination. The two types of pagination available are:
- A. Page
- B. Scroll
- C. Page and Scroll
- D. No Pagination
正解：C
解説：
Explanation
When a table or a SQL query returns many rows, an interactive grid is best displayed to the user with pagination. Pagination enables users to navigate through large data sets by displaying a subset of data at a time3. The two types of pagination available for interactive grids are Page and Scroll3. Page pagination displays a fixed number of rows per page and provides controls to navigate between pages. Scroll pagination displays rows as the user scrolls down the grid and fetches more data as needed
質問 # 46
In your APEX application, you want to have an orderly grid layout of information tiles. Which page type should you choose in the Create Page Wizard?
- A. Cards
- B. Unified Task List
- C. Interactive Grid
- D. Master Detail
正解：A
解説：
Explanation
Cards are a page type that display information in a grid layout of tiles. Each card can contain an image, a title, a subtitle, and an optional link. Cards are suitable for presenting summary or overview information in an attractive and compact way1 Verified References: 1: Understanding Page Types, Features, and Settings - Oracle Help Center
質問 # 47
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