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Define- relational algebra.
The relational algebra is a procedural query language. It having of a set of operations that take one or two relation as input and make a new relation as output.
What is known as fudge factor? The number of partitions is enhanced by a small value called the fudge factor, which is usually 20 percent of the number of hash partitions compu
What is Hierarchical DBMS In HDBMS, data is structured in a tree like manner. There is a parent-child relationship between data items and the data model is very suitable for re
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
Illustrate the collaboration and relationship diagram A collaboration is the society of interfaces, classes and other elements which work together to provide some cooperative b
What is a database? Database - Basically in simple terms A database is a collection of inter related data and/or information stored so which it is available to several users
Mention the various user privileges All privileges directly granted to the user or role. All privileges granted to roles that have been granted to the user or role.
What are the factors to be taken into account when choosing a RAID level? A) Monetary cost of extra disk storage requirements. B) Performance requirements in terms of number
Which method of access uses key transformation? A Hash method of access uses key transformation.
What are composite attributes? Composite attributes can be separated in to sub parts.
what do you mean by primary key constraint?
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