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Types Of Indexes One of the words used during the file organisation is the term index. In this part, let us describe this term in more detail. We find the index of keywords
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
how to data store?
What is trigger? Triggers are statements that are executed automatically by the system as the side effect of a modification to the database.
What are the several forms of identity? a) Value b) Name c) Built-in
Define Join and Outer Join and differentiate between them. Ans: Join - It generates all the combinations of tuples from two relations which satisfy a join condition. Oute
Consider the following relational schema: Doctor(DName,Reg_no) Patient(Pname, Disease) Assigned_To (Pname,Dname) Give expression in both Tuple calculus and Domain calculus for
The JOIN operation is applied on two relations. When we want to choose related tuples from two given relation join is used. The join operation need that both the joined relations m
Rearrange Classes and Operations Sometimes, the similar operation is defined across different classes and can easily be inherited from a familiar ancestor, but more often oper
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
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