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How can you Start MySQL Server?
To start the mysql program type it is name in the command- line prompt. After starting mysql program just display
A welcome letter using the following Syntax:
% mysql
Welcome to the MySQL monitor. Commands end with; or \g.
MySQL connection id:18427 to server version: 3.23.51-log
Type 'help;' or '\h' for help.Type '\c' to clear the buffer-mysql>
Define cardinality and participation constraints on a relationship type, completeness constraint on generalization. Ans: Cardinality defines the number of entities to wh
average response time?
Define in which normalisation form if an attribute of a composite key is dependent on an attribute of other composite key. Ans: 3NF A relation is in 3 NF if an attribute of
1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
One-way Associations When an association is traversed only in the one direction, then it is implemented as a pointer i.e.an attribute which contains an object reference. If mu
Having Clause with sub queries: First we have to recollect the GROUP BYclause. The following query searches the minimum salary in every department. SELECT DEPTNO, MIN (SAL)
What is E-R model? This data model is based on real world that having of basic objects called entities and of relationship between these objects. Entities are explained in a da
Define and differentiate between ordered indexing and hashing. Ans: Ordered indexing: To gain fast random access to records in a file, we can make of an index structure. Every
What are the causes of bucket overflow in a hash file organization? What can be done to reduce the occurrence of bucket overflow? When a record is inserted, the bucket to that
Determine the method of Choosing Algorithms In general, most of operations are easy and have a satisfactory algorithm since description of what is to be done also shows how i
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