write short notes on relational
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 model is an example of a record based model.
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define the terms i key attribute ii value set key attribute an entity type usually has an
define weak and strong entity sets weak entity set entity set that do not have key attribute of their
explain the two types of participation constraint total the participation of an entity set e in a relationship set r is said to be total if each
define the terms i ddl ii dml ddl data base schema is specified by a set of definitions expressed by a special
write short notes on relational model the relational model uses a collection of tables to show both data and
write short notes on domain relational calculus the domain relational calculus uses domain variables that take on values from an attribute
define query language a query is a statement requesting the retrieval of information the portion of dml that includes information retrieval is
the objective of the term project is to demonstrate your understanding and ability to apply the body of knowledge covered in this course the goal
write short notes on schema diagram a database schema along with primary key and foreign key dependencies can be depicted pictorially by
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