Infosys SQL Database Developer Interview Questions and Answers

I joined inm because of the company's reputation for innovation and growth in the tech industry.

• Attracted to company's reputation for innovation

• Excited about opportunities for growth in tech industry

• Impressed by company culture and values

SQL is a programming language used for managing and manipulating relational databases.

• SQL stands for Structured Query Language

• It is used to communicate with databases to perform tasks such as querying data, updating records, and creating tables

• Examples of SQL commands include SELECT, INSERT, UPDATE, DELETE

Join is used to combine rows from two or more tables based on a related column, while Procedure is a set of SQL statements that perform a specific task.

• Join is used to retrieve data from multiple tables based on a related column

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Procedure is a set of SQL statements stored in the database and executed when called

• Procedures can accept input parameters

SQL architecture refers to the structure and components of a SQL database system.

• SQL architecture includes components like storage engine, query processor, and buffer manager.

• The storage engine manages data storage and retrieval, while the query processor processes SQL queries.

• The buffer manager handles caching and memory management to optimize performance.

• Examples of SQL architectures include MySQL, Oracle, and SQL Se

Use the INSERT INTO statement with multiple value sets separated by commas

• Use the INSERT INTO statement followed by the table name

• List the column names in parentheses after the table name

• Use the VALUES keyword followed by multiple value sets in parentheses, separated by commas

• Example: INSERT INTO table_name (column1, column2) VALUES (value1, value2), (value3, value4)

Update query using joins in SQL

• Use UPDATE statement with JOIN clause to update data in multiple tables

• Specify the tables to be updated and joined using ON clause

• Set the columns to be updated in SET clause