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What is a cascading update?
Referential integrity constraints needs that foreign key values in one table correspond to primary key values in another. If the value of the primary key is altered -- that is, updated -- the value of the foreign key must directly be changed to match it. Cascading updates will set this alter to be done automatically by the DBMS whenever essential.
What is a data dictionary? A data dictionary is a data structure which keeps Meta data about the structure of the database i.e. the schema of the database.
Ask questioYou are the database administrator in a university. You have been tasked to come up with a new database for the University. Using the stages in Database Life Cycle come
sir, could anybody help me in getting complete information about the mentioned topic
What is meant by Physical blocks? The input and output operations are completed in block units. The blocks residing on the disk are referred to as physical blocks.
Now that she understands more about the benefits of databases, the play-scheme manager would like to extend the play-scheme database to include data for schools and instructors as
What is the initial step for object-oriented designing The initial step for object-oriented designing is object modeling. Before we go into deep about object modeling first of
What are the drawbacks of File Oriented System in details?
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
Write a short note on QBE? Stands for "Query By Example." QBE is a feature involved along with various database applications which gives user-friendly techniques of running da
what is bogus empowerment. And what is genuine empowerment
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