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SAP HANA platform is one of the most popular in-memory databases used by businesses worldwide. With the increasing adoption of SAP HANA, there is a growing demand for professionals who have the skills and expertise to develop applications on this platform. The SAP C-HANADEV-18 certification exam is designed to test and validate the candidate's knowledge and skills in this area.
SAP C-HANADEV-18 certification exam is an excellent opportunity for professionals who want to enhance their career prospects in the field of SAP HANA development. Becoming a certified SAP HANA developer is a valuable asset for any organization that uses SAP HANA as their database platform. It also opens up new career opportunities for professionals who want to work with advanced technologies and develop innovative solutions that can transform the way businesses operate.
NEW QUESTION # 45
In Node.js, which file do you use to define external module dependencies? Please choose the correct answer.
- A. server.js
- B. pom.xml
- C. package.json
- D. mta.yaml
Answer: C
NEW QUESTION # 46
Which of the following SQL Script elements do you use to transform a set of arrays into an intermediate table variable? Please choose the correct answer.
- A. UNNEST
- B. OSET
- C. ARRAY
- D. UNSET
Answer: A
Explanation:
The UNNEST operator is an SQL Script element that transforms a set of arrays into an intermediate table variable. The UNNEST operator takes one or more array expressions as input and returns a table variable with one or more columns, each corresponding to an array expression. The table variable has as many rows as the maximum length of the input arrays, and the values in each column are taken from the corresponding array elements. If an input array has fewer elements than the maximum length, the missing values are padded with NULLs. The UNNEST operator can be used in the FROM clause of a SELECT statement, or in the INTO clause of a SET statement.
For example, suppose you have two arrays A and B, where A = [1, 2, 3] and B = [4, 5]. You can use the UNNEST operator to transform them into a table variable T as follows:
SET T = UNNEST (A, B);
The result is:
Table
A
B
1
4
2
5
3
NULL
You can also use the UNNEST operator to transform an array of complex types, such as structs or tables, into a table variable with multiple columns. For example, suppose you have an array C of struct type, where C =
[{x: 1, y: 2}, {x: 3, y: 4}]. You can use the UNNEST operator to transform it into a table variable U as follows:
SET U = UNNEST (C.x, C.y);
The result is:
Table
C .x
C .y
1
2
3
4
The following SQL Script elements are not used to transform a set of arrays into an intermediate table variable, but for other purposes:
* OSET: This is a data type that represents an ordered set, which is a collection of distinct values that preserves the order of insertion. OSETs can be used to store and manipulate ordered data, such as ranking or sorting results. OSETs can be created by using the OSET constructor or the OSET_AGG aggregate function.
* ARRAY: This is a data type that represents an array, which is a collection of values that can have duplicates and are accessed by their position. Arrays can be used to store and manipulate complex or multi-dimensional data, such as matrices or tensors. Arrays can be created by using the ARRAY constructor or the ARRAY_AGG aggregate function.
* UNSET: This is not a valid SQL Script element, but a possible typo for UNNEST.
References:
* [SAP HANA Platform Documentation], SAP HANA SQL and System Views Reference, Chapter 2:
SQL Data Types and Literals, Section 2.2: Collection Types, Subsection 2.2.2: Array Type, pp. 36-38.
* [SAP HANA Platform Documentation], SAP HANA SQL and System Views Reference, Chapter 2:
SQL Data Types and Literals, Section 2.2: Collection Types, Subsection 2.2.3: Ordered Set Type, pp.
38-40.
* [SAP HANA Platform Documentation], SAP HANA SQL and System Views Reference, Chapter 3:
SQL Expressions, Section 3.6: Collection Expressions, Subsection 3.6.2: UNNEST Operator, pp. 69-70.
NEW QUESTION # 47
Which keywords do you use to define an OData association? There are 3 correct answers to this question.
- A. JOIN
- B. DEPENDENT
- C. UNION
- D. PRINCIPAL
- E. MULTIPLICITY
Answer: B,D,E
NEW QUESTION # 48
What are the different types of graphical calculation views that can handle measures? There are 2 correct answers to this question.
- A. SQL Access Only
- B. Cube
- C. Cube with star join
- D. Dimension
Answer: B,C
Explanation:
Graphical calculation views are graphical or scripted views that can be used for complex calculations and data transformations in SAP HANA. There are three types of graphical calculation views: cube, dimension, and SQL access only. Cube and cube with star join are the only types that can handle measures, which are numeric values that can be aggregated, such as sales amount or quantity. Dimension views are used to model master data or attributes, such as product name or customer ID. SQL access only views are used to expose the data of another view without any additional logic or transformation. References:
* SAP HANA 2.0 SPS06 - Application Development for SAP HANA1, Section 4.1, p. 77-78
* SAP HANA 2.0 SPS06 - Calculation View Modeling2, Section 1.1, p. 7
* SAP HANA 2.0 SPS06 - Calculation View Modeling2, Section 1.2, p. 8-9
* SAP HANA 2.0 SPS06 - Calculation View Modeling2, Section 1.3, p. 10-11
* SAP HANA 2.0 SPS06 - Calculation View Modeling2, Section 1.4, p. 12-13
* SAP HANA 2.0 SPS06 - Calculation View Modeling2, Section 1.5, p. 14-15
NEW QUESTION # 49
From which tool can you run the XS command line? Please choose the correct answer.
- A. Local operating system shell
- B. SAP WeblDE for SAP HANA
- C. SAP HANA cockpit
- D. SAP HANA studio
Answer: A
NEW QUESTION # 50
Which application runtimes are currently supported by the SAP Cloud Application Programming Model?
There are 2 correct answers to this question.
- A. Go
- B. Python
- C. Node.js
- D. Java
Answer: C,D
Explanation:
The SAP Cloud Application Programming Model (CAP) is a framework for developing cloud-native applications based on open standards and best practices. The CAP supports two application runtimes: Node.js and Java. These runtimes provide the core services and libraries for building and running CAP applications, such as data access, authentication, authorization, localization, logging, and testing. The CAP also supports different database technologies, such as SAP HANA, PostgreSQL, and SQLite, and different deployment options, such as SAP Business Technology Platform, SAP HANA Cloud, or Kubernetes. The other options are not correct because:
* A. Go is not a supported application runtime by the CAP. Go is a programming language that can be used to develop cloud-native applications, but it is not part of the CAP framework.
* C. Python is not a supported application runtime by the CAP. Python is a programming language that can be used to develop cloud-native applications, but it is not part of the CAP framework.
References:
* SAP Cloud Application Programming Model, Overview
* SAP Cloud Application Programming Model, Node.js Runtime
* SAP Cloud Application Programming Model, Java Runtime
NEW QUESTION # 51
What are the main SAP HANA engines responsible for executing calculation views? There are 3 correct answers to this question.
- A. OLAP Engine
- B. XS Engine
- C. Calculation Engine
- D. Join Engine
- E. Java Engine
Answer: A,C,D
NEW QUESTION # 52
Which of the following can be used when implementing transaction management logic in SQLScript using savepoints? Note: There are 3 correct answers to this question.
- A. Rollback to savepoint
- B. Release savepoint
- C. Alter system savepoint
- D. Savepoint
- E. Reverse savepoint
Answer: A,B,D
Explanation:
According to the SAP HANA SQLScript Reference, the following statements can be used when implementing transaction management logic in SQLScript using savepoints:
* Savepoint: Creates a savepoint with a specified name within the current transaction. A savepoint marks a point in the transaction that can be rolled back to without affecting the rest of the transaction. For example, SAVEPOINT sp1;
* Rollback to savepoint: Rolls back the current transaction to the specified savepoint. All changes made after the savepoint are undone, but the transaction remains active. For example, ROLLBACK TO SAVEPOINT sp1;
* Release savepoint: Releases the specified savepoint and all subsequent savepoints. The released savepoints are no longer valid and cannot be rolled back to. For example, RELEASE SAVEPOINT sp1; The other options are incorrect, because:
* Reverse savepoint is not a valid statement in SQLScript. There is no such statement in the SAP HANA
* SQLScript Reference.
* Alter system savepoint is not a statement that can be used in SQLScript, but a statement that can be used in SQL. It triggers a savepoint operation for the entire database system, not for a specific transaction. It is used for administrative purposes, such as backup and recovery, not for transaction management logic.
References: SAP HANA SQLScript Reference, Chapter 6, Section 6.4.2, page 2111.
NEW QUESTION # 53
Your multi-target application will use XSJS. Which module type do you create in your application project?
Please choose the correct answer.
- A. Java
- B. HTML5
- C. Node.js
- D. SAP HANA database
Answer: C
Explanation:
To create a multi-target application that will use XSJS, you need to create a Node.js module type in your application project. XSJS is a scripting language that allows you to implement server-side logic and access SAP HANA database features using JavaScript syntax. XSJS is supported by the Node.js runtime of the SAP HANA XS Advanced Model, which provides the necessary libraries and services to execute XSJS code. You can use the SAP Web IDE for SAP HANA to create a Node.js module and add XSJS files to it. The other options are not correct because:
* A. Java is not the module type you need to create for XSJS, as XSJS is not a Java-based language. Java is a module type that allows you to implement Java applications using the Java runtime of the SAP HANA XS Advanced Model.
* B. SAP HANA database is not the module type you need to create for XSJS, as XSJS is not a database object. SAP HANA database is a module type that allows you to create database artifacts, such as tables, views, procedures, and functions, using the SAP HANA deployment infrastructure (HDI).
* D. HTML5 is not the module type you need to create for XSJS, as XSJS is not a web page. HTML5 is a module type that allows you to create static web content, such as HTML, CSS, and JavaScript files, using the HTML5 application repository service.
References:
* SAP HANA Developer Guide for SAP HANA Web IDE, Chapter 5, Section 5.6
* SAP HANA Developer Guide for SAP HANA Web IDE, Chapter 5, Section 5.7
* SAP HANA Developer Guide for SAP HANA Web IDE, Chapter 5, Section 5.8
* SAP HANA Developer Guide for SAP HANA Web IDE, Chapter 5, Section 5.9
NEW QUESTION # 54
You created several database tables in a multi-target application and need to keep their names as short as possible. Which parameter of the .hdinamespace file do you set to ignore? Please choose the correct answer.
- A. mixinTypes
- B. hdbtable
- C. name
- D. subfolder
Answer: D
Explanation:
According to the SAP HANA Performance Guide for Developers1, the .hdinamespace file is a JSON resource that defines the naming rules for the run-time objects in a multi-target application. The name parameter specifies the common name-space prefix for the objects, while the subfolder parameter determines whether the name of the sub-folder is added or ignored in the run-time name space. If you want to keep the names of the objects as short as possible, you should set the subfolder parameter to ignore, so that the name of the sub-folder is not appended to the name-space prefix and the object name. For example, if you have a table named CUSTOMERS in a sub-folder named SALES, and you set the subfolder parameter to ignore, the run-time name of the table will be com.sap.hana.example::CUSTOMERS, where com.sap.hana.example is the name-space prefix defined by the name parameter. If you set the subfolder parameter to append, the run-time name of the table will be com.sap.hana.example.SALES::CUSTOMERS, which is longer and more complex. For more information on the .hdinamespace file and the naming rules, see [The HDI Name-Space Configuration File]2 and [Run-Time Name Spaces in SAP HDI]3.
References: 2: The HDI Name-Space Configuration File 3: Run-Time Name Spaces in SAP HDI 1: SAP HANA Performance Guide for Developers
NEW QUESTION # 55
Which of the following information must you specify when you create a new project in SAP Web IDE for SAP HANA? There are 2 correct answers to this question.
- A. SAP HANA database version
- B. Namespace
- C. Project name
- D. Template
Answer: B,C
NEW QUESTION # 56
Which functionality is provided by SAP WeblDE for SAP HANA? There are 2 correct answers to this question.
- A. Build and deploy applications
- B. Syntax-aware editors for code
- C. User management
- D. Organization and space management
Answer: A,B
Explanation:
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.
References:
* [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.
NEW QUESTION # 57
What statement must you insert to the following OData service to complete the navigation definition from the customer entity set to the corresponding sales orders? Please choose the correct answer.
service{ "sample.odata::customer" as customer" navigates ("Customer_Orders* as "toOrders); "sample.odata::salesorder" as "Orders";)
- A. Aggregation
- B. Association
- C. Join condition
- D. Key specification
Answer: B
NEW QUESTION # 58
Which tool do you use to create a calculation view in a multi-target application? Please choose the correct answer.
- A. SAP HANA Web-based Development Workbench
- B. SAP HANA studio
- C. SAP HANA database explorer
- D. SAP Web IDE for SAP HANA
Answer: D
Explanation:
To create a calculation view in a multi-target application, you need to use the SAP Web IDE for SAP HANA, which is a web-based development environment that supports the full development lifecycle of SAP HANA applications. The SAP Web IDE for SAP HANA provides graphical and code-based editors for creating calculation views, as well as other database artifacts, such as tables, views, procedures, functions, and more.
You can also use the SAP Web IDE for SAP HANA to create and deploy multi-target applications, which are modular applications that consist of multiple components, such as database modules, Node.js modules, Java modules, HTML5 modules, etc. The other options are incorrect because the SAP HANA database explorer, the SAP HANA Web-based Development Workbench, and the SAP HANA studio do not support the creation of calculation views in a multi-target application. The SAP HANA database explorer is a web-based tool that allows you to browse, manage, and query SAP HANA databases, but not to create or edit database artifacts.
The SAP HANA Web-based Development Workbench is a deprecated tool that was used to create and edit SAP HANA XS classic applications, but not multi-target applications. The SAP HANA studio is a desktop tool that was used to create and edit SAP HANA native applications, but not multi-target applications.
References:
* SAP Web IDE for SAP HANA - SAP Help Portal
* Creating Calculation Views - SAP Help Portal
* Multi-Target Applications - SAP Help Portal
* SAP HANA Database Explorer - SAP Help Portal
* SAP HANA Web-based Development Workbench - SAP Help Portal
* [SAP HANA Studio] - SAP Help Portal
NEW QUESTION # 59
Which OData capacities are supported in SAP HANA extended application services, advanced model (XSA)? There are 3 correct answers to this question.
- A. Join
- B. Association
- C. Aggregation
- D. Union
- E. Projection
Answer: B,C,E
NEW QUESTION # 60
You need to check user input data in your OData request. Which exit type do you use? Please choose the correct answer.
- A. Consistency
- B. Validation
- C. Modification
- D. Verification
Answer: B
NEW QUESTION # 61
You want to exclusively use declarative logic in an SQL Script procedure. Which of the following operators can you use? There are 2 correct answers to this question.
- A. COMM IT statement
- B. IF condition
- C. MAP_REDUCE function
- D. TABLE variable
Answer: C,D
NEW QUESTION # 62
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