DBA Consultant Interview Questions and Answers

Performing MSSQL database backup and restoration involves using SQL Server Management Studio or T-SQL commands.

• Use SQL Server Management Studio to perform backup and restoration tasks.

• For backup, right-click on the database, select Tasks, then Backup. Choose the backup type, destination, and options.

• For restoration, right-click on Databases, select Restore Database. Choose the source, destination, and options.

• Alternatively, use T-SQL commands like BACKUP DATABASE and RESTORE ...read more

Optimizing a slow-running query involves identifying bottlenecks and making adjustments to improve performance.

• Identify the root cause of the slow query by analyzing execution plans

• Consider creating or modifying indexes to improve data retrieval

• Optimize the query itself by rewriting it to be more efficient

• Update statistics on tables involved in the query to help the query optimizer make better decisions

• Consider partitioning large tables to improve query performance

The SQL Server DBA structure includes roles such as junior DBA, senior DBA, and lead DBA.

• Junior DBA: responsible for basic tasks such as backups and restores

• Senior DBA: responsible for performance tuning and troubleshooting

• Lead DBA: responsible for managing the team and making strategic decisions

• Other roles may include database architect and database developer

• The structure may vary depending on the organization's size and needs

DBMS in Oracle stands for Database Management System, which is a software that manages the storage, retrieval, and organization of data in a database.

• DBMS in Oracle is a software system that allows users to define, create, maintain, and control access to the database.

• It provides an interface for users to interact with the database and perform various operations like querying, updating, and managing data.

• Oracle Database is a popular DBMS that offers features such as data secur...read more