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To delete a particular column in a relation which command is used ?
To delete a particular column in a relation ALTER command is used.
The ER diagram clearly showing the additional tables you have implemented. SQL table creation scripts for the tables you have set up. SQL scripts showing the sample data you
What are the requirements to ensure the objectives of file management principle is realized?
write-set(T): Each data items that are written by a transaction T
Project Description: Looking to prepare automated trading engine for alternate cyprto currencies starting with Cryptsy, finally integrating into other exchanges. Need to work wi
A super key is an attribute or set of attributes used to recognize the records uniquely in a relation. For instance, in the Relation PERSON defines earlier PERSON_ID is a super
why data in an RDMS need to be normalised
Distributed Database Management System
in case of functional dependencies how we get the higher normal form.
what is the need of a log in dbms
Whenever the LIMIT clause will be used? LIMIT is used for the following kinds of problems: 1) Answering questions about first or last and largest or smallest 2) Splitting
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