SAP C_HANADEV_18 SAP Certified Development Associate - SAP HANA 2.0 SPS06 Exam Practice Test

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Question 1

What are the steps to debug a Node.js application using SAP Web IDE for SAP HANA? There are 3 correct answers to this question.

AAttach the debugger to the node module.

BSet a breakpoint in the application.

CSpecify the proper Git repository in the debug properties.

DBuild the application with the debug option.

EOpen the debugger.

Answer : A, B, E

To debug a Node.js application using SAP Web IDE for SAP HANA, you need to perform the following steps:

Open the debugger. You can open the debugger from the toolbar by clicking the \uE921 (debugger) icon, or from the menu by choosing Tools Debugger . The debugger opens in a new browser tab and shows a list of all Node.js modules in your project, as well as the available debug configurations.

Attach the debugger to the node module. You can attach the debugger to any running Node.js module in your project by selecting the module name and clicking the \uE921 (attach) icon. Alternatively, you can create a new debug configuration for the module by clicking the \uE921 (create) icon and specifying the module name, the port number, and the source mapping. The debugger will connect to the Node.js module and switch it to debug mode.

Set a breakpoint in the application. You can set a breakpoint in the application code by opening the file in the editor and clicking the left margin next to the line number where you want to pause the execution. A red dot will appear to indicate the breakpoint. You can also use the \uE921 (breakpoints) pane to view, enable, disable, or remove breakpoints.

Run the application. You can run the application from the browser by clicking the application URL in the run console, or from the command line by using the cf CLI commands. The application will execute until it reaches a breakpoint or an exception, and then pause and show the current state of the variables, call stack, and watch expressions in the debugger.

Debug the application. You can use the debugger to inspect and modify the variables, evaluate expressions, step over, step into, step out, or resume the execution, as well as view the console output and the server log. You can also detach the debugger from the module by clicking the \uE921 (detach) icon, or stop the module by clicking the \uE921 (stop) icon.

The other option is incorrect because you do not need to specify the proper Git repository in the debug properties. The Git repository is used to manage the source code of the application, but it is not relevant for the debugging process. You also do not need to build the application with the debug option, because the debugger can attach to any running Node.js module without any special build settings.Reference:

Running and Testing Node.js Modules- SAP Help Portal

Debugging Node.js Modules- SAP Help Portal

Question 2

To perform a specific task of an XS advanced application, what does a user need? Please choose the correct answer.

ATo have directly assigned a Role Collection

BTo have directly assigned a Scope

CTo be assigned to an Organization

DTo be assigned to a Space

Answer : A

According to the SAP HANA Developer Guide, to perform a specific task of an XS advanced application, a user needs to have directly assigned a role collection. A role collection is a set of roles that grant the user the necessary privileges and authorizations to access and use the application. A role collection can be assigned to a user either directly by an administrator, or indirectly by a workflow or a self-service. The other options are incorrect, because:

To have directly assigned a scope is not a way to perform a specific task of an XS advanced application, but a way to limit the access of a user to a subset of resources within an application. A scope is a qualifier that can be added to a role to restrict the user's access to a specific resource, such as a space, an organization, or a service instance. A scope does not grant any privileges or authorizations by itself, but only modifies the existing ones.

To be assigned to an organization is not a way to perform a specific task of an XS advanced application, but a way to group users and resources in a logical unit. An organization is a container that holds spaces, users, applications, and services. An organization can have one or more spaces, which are isolated environments for developing, deploying, and running applications. A user can belong to one or more organizations, but can only perform tasks in the spaces that they are assigned to.

To be assigned to a space is not a way to perform a specific task of an XS advanced application, but a way to access a specific environment for developing, deploying, and running applications. A space is a sub-container within an organization that holds applications and services. A space can have one or more users, who can have different roles and permissions depending on their tasks. A user can belong to one or more spaces within an organization, but can only perform tasks in the spaces that they are assigned to.

Question 3

Which Git commands are available with the SAP Web IDE for SAP HANA? There are 3 correct answers to this question.

ATest changes

BPush code

CClone a repository

DRedeploy the code

EMerge changes

Answer : B, C, E

When you create a new project in SAP Web IDE for SAP HANA, you must specify the project name and the template. The project name is a unique identifier for your project that is used to create the folder structure and the deployment descriptor file (mta.yaml) for your project. The template is a predefined set of files and configurations that provide the basic structure and functionality for your project. You can choose from various templates, such as SAP HANA Database Project, SAP Cloud Platform Business Application, SAP Fiori Freestyle Project, and more, depending on your development scenario and requirements.

The following information is not required or not applicable when you create a new project in SAP Web IDE for SAP HANA:

SAP HANA database version: This information is not required when you create a new project in SAP Web IDE for SAP HANA, as the SAP HANA database version is determined by the target environment where you deploy your project. The SAP Web IDE for SAP HANA supports multiple SAP HANA versions, such as SAP HANA 2.0 SPS 04, SAP HANA 2.0 SPS 05, and SAP HANA Cloud. You can check the compatibility of the SAP Web IDE for SAP HANA and the SAP HANA database versions in the SAP HANA Deployment Infrastructure Reference.

Namespace: This information is not applicable when you create a new project in SAP Web IDE for SAP HANA, as the namespace is a concept that is used to organize the design-time artifacts in the SAP HANA repository, which is a legacy feature that has been deprecated since SAP HANA 2.0 SPS 02. Instead of using the SAP HANA repository, you should use the SAP HANA Deployment Infrastructure (HDI) to deploy your database artifacts to HDI containers, which are isolated schemas that represent runtime objects. You can configure the artifact namespaces for your HDI containers by editing the .hdiconfig file in the db module of your project.

[SAP HANA Deployment Infrastructure Reference], Chapter 5: HDI with XS Advanced, Section 5.1: Developing with the SAP Web IDE for SAP HANA, Subsection 5.1.1: Create a Project, pp. 101-102.

[SAP HANA Platform Documentation], SAP HANA Developer Guide for SAP HANA XS Advanced Model, Chapter 2: Getting Started with SAP Web IDE for SAP HANA, Section 2.1: Creating a Project, pp. 17-19.

Question 4

Which functionality is provided by SAP WeblDE for SAP HANA? There are 2 correct answers to this question.

ASyntax-aware editors for code

BUser management

CBuild and deploy applications

DOrganization and space management

Answer : A, C

SAP Web IDE for SAP HANA is a browser-based integrated development environment (IDE) that allows you to create and manage multi-target applications (MTAs) that use the SAP HANA Deployment Infrastructure (HDI). SAP Web IDE for SAP HANA provides a comprehensive suite of tools that enable the development of complex applications comprising web-based or mobile user interfaces (UIs), business logic, and extensive SAP HANA data models. SAP Web IDE for SAP HANA is tightly integrated with the SAP HANA runtime tools, the SAP HANA deployment infrastructure (HDI) for XS advanced, the tools used for application life-cycle management (ALM), and the XS advanced run-time platform. Some of the functionality that is provided by SAP Web IDE for SAP HANA are:

Syntax-aware editors for code: SAP Web IDE for SAP HANA provides syntax-aware editors for various code and SAP HANA artifacts, such as SQLScript, CDS, calculation views, HTML5, JavaScript, Java, and more. The syntax-aware editors offer features such as syntax highlighting, code completion, code formatting, code validation, code navigation, code templates, and code refactoring. The syntax-aware editors help you to write and edit code more efficiently and accurately.

Build and deploy applications: SAP Web IDE for SAP HANA provides build and deploy tools that allow you to compile, package, and deploy your MTA project to the XS advanced environment. The build and deploy tools use the mta.yaml file, which is the deployment descriptor file that specifies the metadata and dependencies for your MTA project. The build and deploy tools also use the HDI service, which is the service layer that enables you to deploy database artifacts to HDI containers. The build and deploy tools support various commands, such as build, run, deploy, undeploy, and redeploy.

The following functionality is not provided by SAP Web IDE for SAP HANA, but by other tools or services:

User management: User management is the process of creating and managing users and their roles and privileges in the XS advanced environment. User management is not performed by SAP Web IDE for SAP HANA, but by the User Account and Authentication (UAA) service, which is a shared service that provides authorization and trust management for XS advanced applications. The UAA service uses the xs-security.json file, which is the application security descriptor file that specifies the security configuration for your application. The UAA service also uses the SAP HANA cockpit, which is a web-based administration tool that allows you to manage users and roles in the SAP HANA database.

Organization and space management: Organization and space management is the process of creating and managing the organizational units of the XS advanced environment, such as organizations and spaces. Organizations and spaces are used to isolate and group the resources and applications of different users or teams. Organization and space management is not performed by SAP Web IDE for SAP HANA, but by the Organization and Space Management tool, which is a web-based tool that allows you to create and manage organizations and spaces and their quotas and roles. The Organization and Space Management tool also uses the Cloud Foundry Command Line Interface (CF CLI), which is a command-line tool that allows you to perform various operations on the XS advanced environment and the applications and services.

[SAP HANA Deployment Infrastructure Reference], Chapter 5: HDI with XS Advanced, Section 5.1: Developing with the SAP Web IDE for SAP HANA, pp. 101-106.

[SAP HANA Platform Documentation], SAP HANA Developer Guide for SAP HANA XS Advanced Model, Chapter 2: Getting Started with SAP Web IDE for SAP HANA, pp. 17-19.

Question 5

What are the disadvantages when deploying Dynamic SQL? There are 2 correct answers to this question.

ALimited opportunities for optimization

BNo possibility to bind the result to a SQL Script variable

CNo possibility to use SQL Script variables

DAdditional SQL execution privileges are required

Answer : A, D

Dynamic SQL allows you to construct and execute SQL statements at run time, using variables and expressions that may not be supported in SQLScript. However, it also has some drawbacks, such as:

Limited opportunities for optimization: The SQL statement is potentially recompiled every time it is executed, which may affect the performance and resource consumption. The optimizer cannot use static information, such as data types, cardinalities, or indexes, to generate an optimal execution plan. The statement may also bypass the SQL cache, which stores the results of frequently executed queries for faster retrieval.

Additional SQL execution privileges are required: The user who executes the dynamic SQL statement must have the necessary privileges to access the objects and operations referenced in the statement. This may pose a security risk, as the user may gain access to sensitive data or perform unauthorized actions. To prevent SQL injection attacks, the dynamic SQL statement should be validated and sanitized before execution.

The other options are incorrect, because:

It is possible to bind the result of a dynamic SQL statement to a SQLScript variable, using the INTO clause of the EXECUTE IMMEDIATE statement. For example,EXECUTE IMMEDIATE 'SELECT COUNT(*) FROM 'TABLE'' INTO lv_count;

It is possible to use SQLScript variables in a dynamic SQL statement, using the USING clause of the EXECUTE IMMEDIATE statement. For example,EXECUTE IMMEDIATE 'SELECT * FROM 'TABLE' WHERE 'COLUMN' = ?' USING lv_value;

Question 6

You need to create a native SAP HANA application that fully leverages the SAP HANA platform. How do you implement data-intensive

calculations?

Please choose the correct answer.

APush the calculations onto the application layer.

BPush the calculations onto the database layer

CPush the calculations onto the presentation layer.

DDistribute calculations between application layer and presentation layer.

Answer : B

To create a native SAP HANA application that fully leverages the SAP HANA platform, you should implement data-intensive calculations on the database layer, using SQLScript or calculation views. SQLScript is a scripting language that allows you to write stored procedures, functions, and triggers that perform complex calculations and data transformations on the SAP HANA database. Calculation views are graphical or scripted views that define data models based on tables, views, or other calculation views, and apply filters, joins, aggregations, and other operations on the data.By pushing the calculations onto the database layer, you can take advantage of the in-memory processing, parallelization, and optimization capabilities of SAP HANA, and reduce the data transfer and network latency between the application layer and the database layer123.

The other options are not correct because they do not fully leverage the SAP HANA platform, and they may result in poor performance, high resource consumption, and increased complexity. Pushing the calculations onto the application layer means that you use a programming language, such as Java or Node.js, to perform the calculations on the application server, which may not be as efficient or scalable as the database server. Pushing the calculations onto the presentation layer means that you use a UI framework, such as SAPUI5 or SAP Fiori, to perform the calculations on the client device, such as a browser or a mobile device, which may not have enough processing power or memory to handle large or complex data sets. Distributing the calculations between the application layer and the presentation layer means that you split the calculations into different parts and execute them on different layers, which may introduce inconsistency, redundancy, and dependency issues.Reference:

SAP HANA Platform, SAP HANA SQL and System Views Reference, SQLScript Guide

SAP HANA Platform, SAP HANA Modeling Guide for SAP HANA Web Workbench, Calculation Views

SAP HANA Platform, Developing Applications with SAP HANA Cloud Platform, Developing Multi-Target Applications, Developing Database Modules

Question 7

What are the key characteristics of the calculation view's Input Parameter? There are 3 correct answers to this question.

AIt is passed using a WHERE clause.

BIt can NOT be used to filter measure values.

CIt can be used in a conditional expression.

DIt is passed via reserved word PLACEHOLDER.

EIt can be used to pass values to table functions.

Answer : C, D, E

A calculation view is a view that combines data from multiple sources, such as tables, views, or functions, using graphical or SQLScript logic. A calculation view can define input parameters, which are variables that allow the user to influence the query execution with values that are entered at runtime. Input parameters can be used for various purposes, such as filtering, currency conversion, or dynamic calculations.

Some of the key characteristics of the calculation view's input parameter are:

It can be used in a conditional expression. A conditional expression is an expression that evaluates to a value based on a condition. For example, an input parameter can be used to determine which column to use for aggregation, or which table function to call, based on the user's input. A conditional expression can be written using the CASE or IF syntax in SQLScript, or using the graphical expression editor in the calculation view.

It is passed via reserved word PLACEHOLDER. The reserved word PLACEHOLDER is used to pass the input parameter value to the calculation view when calling it from SQL. The syntax is PLACEHOLDER.''

inputparametername

'' => 'value'. For example, if the calculation view has an input parameter named CURRENCY, then the SQL statement to call the view with the value 'USD' would be SELECT * FROM ''CALC_VIEW'' (PLACEHOLDER.''

CURRENCY

'' => 'USD').

It can be used to pass values to table functions. A table function is a function that returns a table as its output. A table function can be used as a data source in a calculation view, and it can accept input parameters as arguments. For example, a table function can perform currency conversion based on the input parameter value, and return the converted data to the calculation view.

The other options are incorrect because they are not characteristics of the calculation view's input parameter. It is not passed using a WHERE clause, as the WHERE clause is used to filter data based on a condition, not to pass values to a view. It can be used to filter measure values, as measure values are numeric values that can be aggregated, such as sales amount or quantity. An input parameter can be used to filter measure values based on a range, a comparison, or a calculation. Reference:

SAP HANA Platform 2.0 SPS06: SAP HANA SQL and System Views Reference, Section 2.1.5.3

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.1

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.2

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.3

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.4

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.5

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.6

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.7

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.8

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.9

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.10

SAP HANA Platform 2.0 SPS06: SAP HANA SQLScript Reference, Section 2.1.2.11