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What is object identity?
An object retains its identity even if some or all the values of variables or explanations of methods change overtime.
How do I use strap on?#
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
what is primary key
write a short note on participation role? Participation role: roles are indicating in E-R diagram by labelling the lines that connect diamonds to rectangles.
Define the terms i) Entity set ii) Relationship set Entity set: The set of all entities of the similar type is termed as an entity set. Relationship set: The set of all rela
Suppose that in an organisation, an employee may do different roles in dissimilar projects. Say, RAM is doing coding in one project and doing designing in another. Suppose that the
The advantages of a database management system (DBMS) include :- Data integrity and elimination of duplication.
Describe integrity constraints? Integrity Constraints - A database is just as excellent as the information stored in it, and a DBMS must therefore help avoid the entry of inc
how map binary relation one to one
In this exercise you will create ten records, each containing the following fields: student name, class: Freshman, Sophomore, Junior or Senior, Major: Liberal Arts or General Sci
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