Microsoft Access performs an immediate update of the database when data is modified, added, or deleted, but Oracle will not actually physically update the database until a COMMIT command is explicitly or implicitly run.   Question 38 options:   1) True   2) False

When you use a transaction, the database tables/views/other resources used in the transaction are locked until the transaction is either committed or rolled back in order to ensure all modifications are either ALL made, or none of them made. Usually databases also have options on the level of locking used such as no one can read or make changes to those resources when locked, or users can’t make changes to the resources but they can read data in the tables/views/read access to resources.  Pick a potential problem with database locks on tables/views/resources and one popular way database administrators and / or database users use to address that problem?

Explain the hashing method of storing records.

Computer science