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Explain the Role of a database administrator a. Defining the Schema The DBA describes the schema which consists of the structure of the data in the application. The DBA
What is Alternate Key Alternate Key: This is the candidate key which is not taken as the primary key of the table. They are named so because although not the primary key, the
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
Consider the subsequent relations RENTER(rno, fname, lname, address, tel_no, pref_type, max_rent) VIEWING(rno, pno, date, comment) PROPERTY_FOR_RENT( pno, street, area ,city,
how to design a bakery business in data base
Chapter 1 - Profile for the Organization You have to select an organization of your choice and assume that you work for that organization. Now you must prepare a brief profile of t
What are the several forms of identity? a) Value b) Name c) Built-in
management information system based on functional organisation
explain the steps for reduction of er model into relational model?
What is the most significant feature that does not directly map into programming language structures? Why? Association, since there are complex types of association, like as qu
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