Teradata Senior Database Administrator Interview Questions, Process, and Tips

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

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 p...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

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 tabl...read more