What is the goal of lowering the transaction isolation level in database management systems?

Lowering the transaction isolation level in a DBMS is done to improve performance and increase concurrency when working with the database. A higher isolation level ensures greater data integrity but reduces speed due to locks and waits.

The goal of lowering the isolation level:

• Reduce locks and delays during concurrent data access.
• Increase system throughput.
• Allow some degree of 'dirty reads' or partial consistency where acceptable.

For example, the READ UNCOMMITTED isolation level allows reading uncommitted data, speeding up operations but potentially leading to inconsistent reads.

Thus, choosing the isolation level is a trade-off between data integrity and performance.