Senior Database Administrator Interview Questions and Answers for Freshers

Data dictionary tables store metadata about database objects. History data is stored in audit tables or separate history tables.

• Data dictionary tables contain information about database objects such as tables, columns, indexes, and constraints.

• History data can be stored in audit tables that track changes to data over time.

• Separate history tables can also be used to store historical data.

• Examples of data dictionary tables include SYSOBJECTS and SYSCOLUMNS in Microsoft SQL Serv...read more

Various methods to solve spool space issue

• Optimize queries to reduce spool space usage

• Increase spool space allocation for the user

• Use temporary tables to reduce spool space usage

• Use compression techniques to reduce spool space usage

• Avoid Cartesian joins to reduce spool space usage

Hop Amp CPU is a performance issue caused by excessive CPU usage in a database server.

• Hop Amp CPU occurs when a database server is overloaded with too many queries or transactions.

• It can also be caused by poorly optimized queries or inefficient database design.

• Hop Amp CPU can lead to slow response times, system crashes, and other performance issues.

• To prevent Hop Amp CPU, database administrators should monitor server performance, optimize queries, and ensure efficient databas...read more

Data protection techniques are essential for safeguarding sensitive information from unauthorized access or theft.

• Encryption of data at rest and in transit

• Access controls and authentication mechanisms

• Regular backups and disaster recovery plans

• Data masking and anonymization

• Monitoring and auditing of database activity