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List the set operations of SQL?
1) Union
2) Intersect operation
3) The except operation
assignment
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
Deletion Anomalies: Loss of important Information: In some cases, useful information may be lost when a tuple is deleted. For instance, if we delete the tuple corresponding to stu
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
Explain the term- Periodic recomputation Periodic recomputation: Base values are often updated in bunches. Sometimes, it is possible to just recompute all derived attributes p
how oracle can be used
Define the terms i) DDL ii) DML DDL: Data base schema is specified by a set of definitions expressed by a special language known as a data def
What is the way a particular application views the data from the database that the application uses? Sub schema is the way a particular application views the data from the data
Problem: (a) Briefly explain the ‘Hierarchical Database Model' using appropriate diagram. (b) List and briefly describe five potential benefits of the database approach comp
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