Why Must Sql Locks Be Set On Database Objects?

1.	Why Must Sql Locks Be Set On Database Objects?
Answer» If several TRANSACTIONS want to ACCESS the same objects in parallel, these ACCESSES must be synchronized by the SQL lock management. Since the database system allows concurrent transactions for the same database objects, LOCKS are required to ISOLATE individual transactions. To lock an object means to lock this object from certain forms of use by other transactions.

Answer»

If several TRANSACTIONS want to ACCESS the same objects in parallel, these ACCESSES must be synchronized by the SQL lock management.
Since the database system allows concurrent transactions for the same database objects, LOCKS are required to ISOLATE individual transactions.
To lock an object means to lock this object from certain forms of use by other transactions.

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