Database Testing Interview Questions and Answers blog will cover various interview questions related to database testing.

Whether you are experienced or starting as a database tester, you will surely gain helpful information here.

Database testing is integral to software testing, helping ensure databases function optimally and efficiently.

Being prepared for interview questions regarding database testing gives any software developer an edge, giving them an extra competitive edge over potential employers.

SQL database testing Interview questions designed by us will focus on helping you demonstrate both your knowledge of and application to various topics, along with real-world examples and scenarios.

You’ll receive sample questions, answers and explanations to prepare for interviews effectively.

1. What is database testing?

Database testing is a type of software testing that focuses on the interaction between the application and the database.

It is crucial in software development because it involves understanding the structure and query language of the database, which is where application data is stored.

2. What is the role of the query language in database testing?

The query language, SQL in the case of databases, allows for communication with the database and enables various activities such as creating database objects and using indexes.

3. What is the difference between front-end testing and database testing?

Front-end or UI testing focuses on the application’s user interface and ensures all web elements are available and working correctly.

In contrast, database testing focuses on database components like data and objects such as tables, indexes, stored procedure, triggers, and functions.

4. What are some tools used for front-end testing and API testing?

Tools used for front-end testing include Selenium and Sci-Praise, while tools used for API testing include various API testing tools.

5. What is the difference between black box testing and white box testing in the context of database testing?

In database testing, black box testing refers to testing the database without knowing its internal workings.

In contrast, white box testing refers to trying the database with knowledge of its inner workings.

6. Why is back-end testing necessary for APIs?

Back-end testing is necessary for APIs because they have business logic and require direct interaction with the database.

7. What is the scope of database testing in software development?

Database testing is comprehensive box testing, including black-and-white box testing.

It is an essential component of software development involving the interaction between the application and the database.

It involves various types of testing, including UI testing, API testing, and database testing.

8. What are the different types of testing available on the database?

The different types of testing available on the database include detailed, business intelligence, black box, and white box testing.

9. What is GUI testing?

GUI testing is a front-end testing process focusing on the user interface of web applications, desktop applications, or mobile applications.

10. What is involved in APA testing?

APA testing is a back-end testing process that involves actual data coming from the database and triggering APA calls internally.

11. What is the purpose of using a semicolon as a delimiter when creating a stored procedure in MySQL?

Using a semicolon as a delimiter when creating a stored procedure in MySQL allows you to execute the second statement without errors.

12. What is the difference between UI testing and database testing?

UI testing focuses on the user interface, while database testing focuses on database components and data.

13. How is data collected from various databases and stored in a data warehouse?

A company with different branches and geographical locations collects data from various databases and stores it in a data warehouse by extracting transactional data from other databases, applying transfer transformation rules, and pushing it into a single server, the data warehouse.

14. How do you execute the stored procedure as a single statement in MySQL?

To execute the entire stored procedure as a single statement, define your delimiter using the keyword delimiter slash and use it at the end of the stored procedure.

Reset to delimit the semicolon after creating the stored procedure.

15. What is ETL testing?

ETL testing is the process of testing the data after it has been extracted, transformed, and loaded into the data warehouse.

16. How do you create a stored position in a database?

To create a stored position, specify the database object and create a procedure using the “create procedure”.

You then name the procedure and select the name to return customer information.

If you want to save the query multiple times, create a stored procedure and keep it.

17. How are databases tested?

Databases are tested using various testing techniques and tools, including black box testing, white box testing, and database testing tools.

18. What is the purpose of the first stored procedure created using the call keyword?

The first stored procedure is created to return data from the customer’s table belonging to a specific city, in this case, Singapore.

It can be called multiple times in multiple places and sometimes retrieves data from various tables.

19. What is white box testing in the context of database testing?

White box testing in the context of database testing involves examining the behaviour of a database, such as DML operations, data manipulation, and data mapping.

20. What is the purpose of the third stored procedure?

The third stored procedure accepts the customer number as an input parameter.

It returns the total number of orders the customer has ordered, including those that were shipped, cancelled, or reserved.

21. What is data mapping in the context of database testing?

Data mapping in database testing ensures data is stored in proper columns and objects are communicated internally.

22. What tools or elements are used in creating the stored procedure?

The stored procedure is created using a delimiter and a newly held presence.

It uses a keyword to create a new stored procedure, which takes input and output parameters.

23. What is load testing in the context of non-functional testing?

Load testing in the context of non-functional testing gradually increases the database’s load.

24. What does performance testing focus on in the context of non-functional testing?

Performance testing in the context of non-functional testing focuses on stability and potential breakdowns.

25. What does the stored procedure do after inserting the data into the supplier products table?

After inserting the data into the supplier products table, the stored procedure finds the number of records in the supplier’s product stable.

It compares the input parameters to determine the number of documents created in the table.

26. Why is database testing crucial in any system?

Database testing is crucial in any system because it ensures the stability and security of the database.

Understanding SQL is essential for successful testing.

27. What is the syntax for creating a stored procedure?

The syntax for creating a stored procedure varies depending on the database management system.

However, it typically involves defining the procedure name, input parameters, and the code to be executed.

28. What should be downloaded to have a database schema?

To have a database schema, one can download the classic model’s database from the MySQL website or directly from their website.

29. How can one connect to the local server for database testing?

To connect to the local server for database testing, one can open the MySQL workbench, which is a client software of the MySQL database server, enter the connection details provided in the previous video, and this will allow the user to connect to the database and perform the necessary tests.

30. What is the step-by-step guide to setting up an environment for database testing?

The guide includes downloading and installing the SQL server, downloading the MySQL sample database, and connecting to the database.

The process also covers data source lines, command length lines, and connecting to the database using the MySQL client or workbench client.

31. How do you import data into the classic model’s database?

Import data into the classic model’s database by keeping the SQL file in a folder and using the data import command in the MySQL workbench server menu.

The user must select the source and target databases and click the start import button.

32. What is the actual schema of the classic model database?

The actual schema of the classic model database consists of six, seven, and eight tables, including payments, customers, orders, offices, employees, product lines, products, and order details.

It provides documentation on the schema of each table in the database.

33. What is the purpose of storing procedure in a database?

The stored procedure is essential for keeping and transferring data between tables and performing DML operations such as updating and deleting data.

They also provide advantages such as increased security, modularity, and code reusability.

34. What eight tables are included in the SQL server database schema?

The eight tables in the SQL server database schema are the customer table, employee table, offices, order details, orders, payments, product lines, and products.

35. What is the source of the details required to test a table in the SQL server database?

The details required to test a table are typically found in the database design document, which serves as a reference document for testing database objects.

36. What is the purpose of the database schema document?

The database schema document provides a detailed data model of the tables, their relationships, and columns, and it serves as a reference for preparing test cases.

37. What tests will be performed on the table in the SQL server database?

The list of tests to be performed on the table includes checking the table name on the database schema, ensuring it is present in the database, verifying the table name conventions, checking the number of columns in the table, verifying the data type of columns according to the design document, and checking the size of columns.

38. Why is it important to understand the table schema before testing it on tables?

Understanding the table schema provides insight into the data structure, which is essential when testing for inconsistencies or issues.

39. What is the significance of column size in schema testing?

Column size is crucial in schema testing as it can affect the amount of data stored, potentially leading to issues if not configured correctly.

40. How can test cases be created for schema testing?

Test cases can be created using an Excel sheet containing sample test cases related to tables and columns.

41. What is metadata in the context of databases?

Metadata is data about the data. It is maintained in tables like the administrator table in the mice equal database.

42. What are the three tests to check column size?

The three tests to check column size are verifying column names, size, and null fields.

Check the column type and whether nulls are allowed, capturing the column names and the nullable attribute.

43. What is the purpose of comparing data with expected data?

Comparing data with expected data ensures that all the data from the same table is accessed and necessary changes are made to meet the user’s expectations.

44. What is the schema validation structural testing process focused on?

The schema validation structural testing process is focused on table schema testing, which involves understanding the tables, relationships, and data model.

45. What is the purpose of creating an Excel sheet with test cases?

The purpose of creating an Excel sheet with test cases is to execute the test cases by connecting the database to the specified database.

46. How are the test cases executed in the database?

The test cases are executed by changing the table name to match the other tables in the database, extracting information from any table using the administrator table, and displaying all information metadata, including fields, types, and null keys, using the describe command.

47. What is the actual result of the test?

The actual result is that the customer table is present per the expected data, ensuring that the data obtained from the test cases is accurate and meets the user’s expectations.

48. What is the first test to ensure the accuracy of data entry in a database?

The first test checks the table name convention, ensuring the table name is single-word and does not contain spaces.

49. What is the primary purpose of the tests being performed on the table?

The primary purpose of the tests is to ensure that the data is accurate and up-to-date.

50. What do the tests involve in terms of column-level validations?

The tests involve extracting column names and their data type, checking if the data type matches the required values, and determining if the columns have interred types such as customer name, contact, last name, first name, and card type.

51. How are null fields in a table checked?

Null fields are checked by examining the document for the number of columns and determining if they allow nulls or repetition of values.

If the value is unknown, it can be made as a null value and updated later.

52. What is the importance of identifying nullable fields, keys, and associated columns in ensuring the integrity of a database?

Identifying nullable fields, keys, and associated columns is essential in ensuring the integrity of a database by examining the structure of tables.

It helps verify the proper association of keys with columns and understand the different constraints in the database.

53. What is involved in the manual testing of stored procedure?

Manual testing of stored procedure involves executing the procedure and checking the data to ensure the results are as expected.

It is done to verify the actual results of the stored procedure.

54. What are stored procedure in the context of databases?

Stored procedure are blocks of SQL statements that can be executed multiple times, reducing network traffic between the application and the database by allowing for the execution of complex queries.

55. How can stored procedure reduce network traffic?

Stored procedure can reduce network traffic by allowing for the execution of complex queries between the application and the database, reducing the amount of data that needs to be transferred.

56. What are some advantages of implementing business logic in stored procedure?

Implementing business logic in stored procedure allows for the centralisation of business logic in the database, increasing security and allowing for the reuse of business logic in multiple places in the application.

57. How can the stored procedure be invoked from the application?

The stored procedure can be saved as a file and invoked from the application, allowing the stored procedure to exhibit the set of statements.

58. What are some benefits of granting privileges to stored procedure?

Granting privileges to stored procedure allows the database administrators to give privileges to the application or user, allowing them to invoke the stored procedure and retrieve results, increasing security and control.

59. What is the purpose of storing procedure in databases?

Stored procedure in databases provide security for managing tables and database objects.

They can take parameters, single or multiple parameters, and return data that can be stored in output parameters.

60. What is the syntax for creating stored procedure in a MySQL database?

To create a stored procedure in a MySQL database, follow the syntax of the SQL editor and use a start command and a data definition language command. The endpoint of a statement is usually a semicolon.

61. What is the purpose of database testing?

The purpose of database testing is to focus on database components and data, ensuring the data’s accuracy and integrity.

62. How do you execute multiple statements in a stored procedure in MySQL?

When creating multiple statements in a stored procedure, use a big keyboard and an end keyword.

When executing the stored procedure, MySQL will consider each statement separately as individual statements.

63. Why is database testing necessary in software development?

Database testing examines application-database interaction.

It is essential in software development since it includes knowing the database structure and query language, which stores application data.

This testing validates that application activities match database objects or tables.

64. Why is it important to set a default delimiter after completing and executing the stored procedure in MySQL?

Setting a default delimiter, such as a semicolon, after completing and executing the stored procedure in MySQL ensures that stored procedure statements are considered separate.

This is because each statement in a stored procedure will end with a semicolon, and without setting a default delimiter, MySQL may not recognise the end of the stored procedure.

65. What is OLAP online application processing data?

OLAP online application processing data is the final data available in the data warehouse, which is application-related and not transactional.

66. What is the third test to ensure the accuracy of data entry in a database?

The third test checks the column names in a table, ensuring the key column name is given correctly according to the design document.

67. How do you execute a stored procedure to return data?

To execute a stored procedure to return data, you need to call the stored procedure using the keyword “call” and specify the procedure’s name.

The statement is then executed to return the data.

68. What are BI testing tools used for?

BI testing tools like Salesforce, Cognos, and Tableau generate reports and analyse data, allowing companies to make business decisions.

69. How do stored procedure help in managing data?

The stored procedureis essential for managing data and reducing network traffic between applications and databases.

They can be created in the database, called from the application, and can be accessed from multiple places within the application.

70. What is functional testing in the context of database testing?

Functional testing in the context of database testing tests the database’s functionality, such as inserting, manipulating, updating, or deleting data.

71. What information does the third stored procedure display?

The third stored procedure displays the shipping status, whether the order has been shipped, cancelled, resolved, or issued.

72. What is non-functional testing in the context of database testing?

Non-functional testing in the context of database testing focuses on performance testing of the database concerning load and stress.

73. How is the stored procedure implemented?

The stored procedure is implemented using a flow chart and a delimiter. It is named “get the customer shipping” and uses case statement programming statements to ensure that the customer number matches the provided country name.

74. What is the focus of security testing?

Security testing focuses on access layer access-related permissions, authentication, and access control.

75. What are the different scenarios that need to be tested during stored procedure testing?

During stored procedure testing, scenarios such as checking if the stored procedure exists in the database, ensuring they support valid input data, and handling exceptions properly should be tested.

76. What are the steps in setting up an environment for database testing?

Setting up an environment for database testing is downloading and installing a database server with the required schemas, having a database schema, and connecting to the local server.

77. What scenarios need to be tested for the stored procedure?

The scenarios that need to be tested for the stored procedure include checking if the stored procedure is present in the database, if it takes valid input data, supports input and output parameters, handles exceptions properly and displays results per expectations.

78. What is the SQL server database composed of?

The SQL server database is a comprehensive database consisting of eight tables connected with a primary and a foreign key.

The tables stored various data types, including customer data, products, order details, payment information, employees, and sales office data.

79. What is the role of a simple requirement or design document in testing stored procedure?

A simple requirement or design document can help list stored procedure, their functions, input and output parameters, and their connection to the database.

This information can help write test cases and understand the expected behaviour of stored procedure.

80. What is the importance of executing structural testing on the table level?

Structural testing on the table level verifies the table’s data type, size, data type, and associated keys, ensuring the table’s integrity and functionality.

Database testing is an integral component of software testing that ensures accuracy and reliability in database data.

When interviewing for database testing roles, candidates will likely encounter questions regarding database structures, SQL queries, data normalisation processes, integrity checks, database security concerns and testing methodologies.

Preparation includes developing strong foundational knowledge of databases and hands-on experience using relevant testing tools while remaining current on trends and best practices related to testing databases.

Keep practical communication skills and the ability to work as part of a team in preparation for such roles.

This Database Testing interview questions for experienced blog provides individuals preparing to interview in database testing with a valuable resource regarding potential questions related to database testing and suggested answers and explanations.

This database testing interview questions for testers blog covers various aspects of database testing, such as SQL queries, performance testing and security testing.

Each question, along with examples and explanations, is discussed thoroughly to ensure readers fully grasp its concepts before answering efficiently.

This database testing questions blog aims to assist job candidates in preparing for database testing interviews by offering them a thorough knowledge of critical concepts and skills in this industry.

By practising answering interview questions from this field and PDFs, candidates can build confidence while increasing their chances of doing well during job interviews.

Good luck in preparing for and attending your interview!