C_HANADEV_17 SAP Certified Development Associate Interview Questions
The C_HANADEV_17 SAP Certified Development Associate certification exam validates the candidate’s understanding of the development tools and languages used to create applications using the SAP HANA platform. To pass the interview successfully you will need to ensure the panel that you can effectively develop and integrate native software applications on the SAP HANA Platform. Moreover, you must demonstrate that you possess the skills needed to create and configure software application components, execute and monitor the application’s processing logic, and perform failure handling and recovery.
You can expect to be asked the kinds of SAP (C_HANADEV_17) questions that reveal a great deal about your candidacy, including your personality and job skills. Here’s a list of some of the top SAP Certified Development Associate (C_HANADEV_17) interview questions you might encounter.
1. Why are OData services important?
OData (Open Data Protocol), a protocol initiated by Microsoft in 2007, allows the creation of REST APIs that integrate services together. OData version 1.0, 2.0, and 3.0 is based on the Microsoft Open Specification Promise. In computing, the Open Data Protocol is a standard that makes it simpler and more interoperable to create and consume queryable APIs across multiple providers.
2. Could you explain the working of the SAP OData?
SAP OData is a standard Web protocol used to query and update data present in SAP, applying Web technologies such as HTTP to provide access to information from a variety of external applications, platforms, and devices. The SAP OData service is created using the SEGW transaction in the SAP system.
3. Can you elaborate on the advantages of OData in SAP?
OData enables you to use standard web protocols, such as GET, PUT, POST, DELETE, and QUERY. OData also employs a stateless application design. This means a web server treats each OData call as an independent request and does not store data from any previous requests. The protocol is implemented in web standards such as HTTP, URI templates, and JSON. It supports CRUD operations and stateless applications.
4. What are some of the demerits of SAP OData?
One disadvantage of Odata is that it does not include direct access to the backed dictionary objects. Instead, developers can only access the object through remote access. Access to Odata service development requires you to use system-provided programming interfaces. The objects used in these interfaces are remote objects, which means that you do not have access to the actual database or directory objects.
5. What do you understand by Association OData?
Entities can be related to other entities through associations. These associations are akin to foreign key constraints between database tables or hierarchies and other relational ties between database objects.
6. What is the difference between Association and navigation in OData?
OData enables users to create associations between Entity Types, which can then be used in Navigation Paths. Navigation Paths can help users navigate from one side of an association to the other.
7. How are Association and Association set different?
An association set is a logical containment mechanism for association instances of the same type. Associations are not a true data modeling construct because associations do not define the structure of data or relationships.
8. How would you explain the SAP SQLScript?
Structured Query Language (SQL) is a database programming language. The SQLScript extension to SQL allows data types to be defined without the creation of corresponding tables. SQLScript is a collection of extensions that allow the definition of table definitions, data manipulation statements, and statements indicating data constraints.
9. How does SAP HANA supports SQL?
The SAP HANA database supports many SQL statements for managing system administration, creating and storing objects, and manipulating data. Some limitations take place when using the SAP HANA database. To fix those errors, you need to find their numeric error code.
10. What is a scalar-valued function in SQL Server?
A scalar-valued function is a method that returns a single value, rather than an array or other collection. It can take one or more parameters and do some kind of work based on them. It can be assigned to a variable containing any type of data. It has no parameters and can be used anywhere that a single value is expected, such as an argument or return value from another function.
11. Could you explain what is a table function in SQL?
A table-valued function is a user-defined function that returns the results in the form of a table. The type of such a table-valued function is always a table. Therefore, you can use a table-valued function just like you would use another table.
12. Can you differentiate between table-valued and scalar-valued functions?
Scalar-valued functions return single scalar data values of a pre-defined type. Unlike inline table-valued functions, which perform computations based on one or more statements, scalar-valued functions cannot reference tables or other structures in their RETURN statements.
13. As an SAP Certified Development Associate (C_HANADEV_17), how would you define triggers?
Database triggers are programs that run automatically in response to an INSERT, UPDATE, or DELETE statement. Triggers can contain several SQL statements, and a trigger can be assigned to a table or to individual columns. Once you define a trigger, you have to assign it to a table or to action such as INSERT, UPDATE, DELETE.
14. Is it possible to call procedures within triggers?
Certainly, we can invoke a stored procedure within the trigger. Let’s say: Create PROCEDURE [dbo].
15. What makes a stored procedure different from a trigger?
Stored procedures and triggers are two types of user-defined SQL code that may be called directly by the user. Stored procedures are written in a local version of the SQL language, often PL/SQL, that returns a value and can be called explicitly. Unlike triggers that can be seen as functions that run automated code when actions (eg update, insert, delete) occur.
16. What functions are performed by triggers?
A TRIGGER function causes an action to occur when an event or circumstance occurs. It retrieves information about the event, subevent, or name of the object or analytic workspace that caused the execution of a trigger program (that is, a TRIGGER_DEFINE, TRIGGER_AFTER_UPDATE, or TRIGGER_BEFORE_UPDATE program).
17. As an SAP Certified Development Associate (C_HANADEV_17) can you tell me something about the SAP HANA calculation view?
SAP HANA calculation views are simple yet powerful information views, which you can use to define more advanced slices on the data available in the SAP HANA database, and which are similar to both attribute views and analytical views. They also offer other analytic capabilities.
18. What is the difference between the calculation view and the analytical view in Hana?
Analytic views are used to model data that includes measures and can include complex logic in multiple tables. Calculation views can be used to process complex queries functionality where advanced queries can be generated on the data in the SAP HANA database.
19. What are the different types of calculation views?
There are two such types one can create:
- Graphical calculation views: created using a graphical editor.
- Script-based calculation views: created by writing SQL scripts.
20. How would your describe Nodejs server-side JavaScript?
Node. js is a JavaScript implementation that allows you to write server-side code using JavaScript. It allows you to write and run small programs directly from the command line without any browser required. For example, if you write a program called hello in a file, a node can execute it as if it were a CGI script running on your web server.
21. Which JavaScript is also called server-side JavaScript?
LiveWire is called Server-side JavaScript, an application development environment in which JavaScript is used to create server-based applications. JavaScript can be used not only to create web pages but also to create server-based applications. Livewire is one of the JavaScript IDEs that uses JavaScript to create server-based applications.
22. Can you differentiate between JavaScript and jQuery?
JavaScript is simply a client-side scripting language, whereas jQuery is a library built with JavaScript. AJAX is a development technique that allows parts of the user interface to be updated without having to reload the web page.
23. What is the simplest way to debug a node js application?
Activate the Node Inspector pane, click the Debugger tab, then click the Start button. The debugging screen is similar to Chrome’s DevTools with a Variables, Watch, Call Stack, Loaded Scripts, and Breakpoints list.
24. Can you tell me something about the persistent data model?
A persistent data structure is one that always preserves the previous version of itself when it is modified. As opposed to an ordinary data structure, which is updated in place, a persistent data structure creates new versions of itself every time it is updated. It can be either partially or fully persistent.
25. What is the integration framework with UI?
The ADF Integration framework allows you to navigate from a system application user interface to an external application user interface. You can define the context of the navigation and design an integrated user experience in a variety of ways.
26. Is “Git” a source code management tool?
Git is the standard software tool for controlling source code versions. You can use it to track different versions of a file simultaneously.
27. Could you explain the use of database security?
Database security programs are designed to protect not only the data of the database itself, but also every application that accesses it, against misuse, damage, and intrusion. Database security programs exist to keep your data, the management system that holds onto it, and any applications that access it safe from misuse, damage, and intrusion.
28. Can you name the five key steps that help to ensure database security?
The five essential practices for database security are listed below:
- Firstly, protecting against any attacks with a database proxy
- Second, setting up auditing and also a robust logging
- Then, practicing a stringent user account management
- Keeping the database software and the OS up-to-date
- Finally, encrypting all the sensitive data in your app, in transit, and at rest.
29. How would you explain the term Authorisation in database?
Authorization is the process of passing information about the authenticated user to the database manager. The database manager uses this information to determine which database operations a user can perform and which data objects a user can access.
30. Can you tell me something about the application security tools?
Today’s information-based economy demands that an organization’s software applications be protected from external threats throughout the entire application lifecycle. A class of information security tools called application security products has emerged to fill this need.
Application Security Tools are designed to protect software applications and data throughout the entire application lifecycle. These tools can be used to protect against data theft, unauthorized access, and other forms of malicious intent.
