many persons involved in the designing use and maintaince of large data base . to maintain large data base several jobs are created these can be called as actors on the scene
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Data isolation refers to the concept of keeping data separated and protected from unauthorized access or modification within a database management system. It ensures that each transaction in the database is independent and operates as if no other transactions are occurring simultaneously, preventing interference and maintaining data integrity. Data isolation is crucial for ensuring the consistency, reliability, and security of the database.
Data isolation in DBMS refers to the concept of keeping data from interfering with each other in concurrent transactions. This means that changes made by one transaction are not visible to other transactions until they are committed. For example, if two users are updating the same database record simultaneously, data isolation ensures that one user's changes are not visible to the other user until they have both finished their transactions and committed the changes.
Hierarchical DBMSNetwork DBMSRelational DBMS
The full form of DBMS is Database Management System.
data dictionary
DBMS is the software to manage the data base.it is set of programs,modules,and packages specially designed to enable the users to manage this data base is called as data base management system.......