Learning with Anu Bamania: Tutoring Sessions

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• CPU stands for Central Processing Unit.
• CPU is the heart of Computer.
• All the proceesing tasks are to be performed by CPU.
• ALU stands for Arithemetic Logical Unit.
• ALU handles all the arithematical operations performed by computer.

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Data redundancy refers to duplication of data.In other words we can say that data can be stored on two or more disks or disk and tape or disk and the Internet.

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A view is simply a structured query language (SQL) query stored as an object. In other words view is like a virtual table which is defined by a view defination query which describes how to compute the view contents.We use views to hide some data from the users.