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What is meant by mean time to failure? The mean time to failure is the amount of time that the system could run continuously without failure.
Describe relational model? Structure of relational data base Basic structure Database schema Keys Schema diagram Query languages
Define the basic operations of the relational algebra? Ans: Basic operators of relational algebra are: 1. Union (∪) - Selects tuples which are in either P or Q or in bot
Improved availability: The data in a distributed system may be replicated so that it is at more than one site. Thus, the failure of a node or a communication link does not necessar
Describe the benefits of OOD techniques OOD techniques are very useful for development of large and complex systems. It has been noted that large projects that are developed u
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State the definition of association An association is a structural relationship which specifies that objects of one thing are connected with objects of another. In UML, asso
FDs in Relationships: Enrols Relationship: None as it is many to many Teaches Relationship : Course code → Instructor Instructor → Course code The next question is:
What is the used of specifying alias? Specifying alias: is used to rename column or attribute in a table.
How to Insert data in your table from another table? insert into e.g, To insert tuples from employee into N_emp created above, use following statement Insert into N_emp
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