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What is called bit-level striping?
Data striping having of splitting the bits of every byte across multiple disks. This is known as bit-level striping.
How do I begin
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
why shadow copy technique is used?
Using a labelled diagram explain the operation of the Data Warehouse, define the basic architectural components and outline the main functionalities. Briefly explain the role an op
What is a view? How it is related to data independence? A view might be thought of as a virtual table, that is, a table that does not really exist in its own right but is inste
Aggregate functions Some of these functions are min, count, max, and avg. These functions help in getting consolidated information from a set of tuples. Example:
Describe multi key files
What are the advantages of Logical Databases? It offers a simple-to-use selection screens. You can change the pre-generated selection screen to your needs. It offers check f
Some disadvantages of File Oriented System ?
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational mo
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