Selgitage transaktsioonide isolatsioonitaset, mille puhul on võimalik lugeda lõpetamata andmeid, ning kuidas seda iseloomustatakse.

The transaction isolation level where it is possible to read uncommitted data is called Read Uncommitted.

Characteristics of this level:

• A transaction can see changes made by other transactions that have not yet been committed.
• This can lead to the phenomenon of "dirty read," where data may be changed or rolled back later.
• Provides minimal isolation, which increases performance but reduces data integrity.

Example: if transaction A updates a record but has not yet committed, transaction B at the Read Uncommitted level can read these changes. If transaction A then rolls back the changes, the data read by transaction B will be incorrect.