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What is trigger?
Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
Define Network DBMS The NDBMS is built primarily on a one-to-many relationship, but where a parent-child representation between the data items cannot be ensured. This may occur
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
Describe Interfaces for the DBA? Interfaces for the DBA - Most database systems holds privileged commands which could be used only through the DBA's staff. These involves com
What are the function of DBA?
Explain the disadvantages of using DBMS There could be a few disadvantages of using DBMS. As DBMS requires computers, we have to invest a good amount in acquiring the hardwa
(a) Differentiate between information and data . (b) List and briefly explain five potential benefits of the database approach compared to conventional file systems. (c) Diff
What are advantages of object models? Object models are efficient for communicating with the application experts and reaching a consensus about the significant aspects of the p
What is a function group? A function group is a collection of logically related modules that share global data with every other. All the modules in the group are contained in
what is Mapping Constraints? with examples
what is definition hierarchical data model
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