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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.
Create an entity relationship diagram, Database Management System
What is the difference between a key and a superkey? Key - A key a single attribute or a combination of two or more attributes of an entity set which is used to identify one
Suppose R is a relation with attributes A1, A2,..., An. As a function of n, tell how many superkeys R has, if: 1.1 The only key is A1. 1.2 The only key is A1 and A2. 1.3 The o
how many types of data model in DBMS? explain data abstraction with its different level
The advantages of a database management system (DBMS) include :- Data integrity and elimination of duplication.
HOW TO SOLVE THE LP Problems by simplex method?z=x1+-3x2+2x3
Explain Stand Alone Query Language in details? Stand alone Query Language - The query language that can be used interactively is known as stand alone query language. It does no
Create Student DB and execute Insert query? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, course
Q. Define a weak entity set and its identifying relationship. List the necessary conditions for a meaningful identifying relationship set of a weak entity set. Entity is a t
Explain the database Planning Project ?
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