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why we fregment at all?
A Functional dependency is described by X Y between two groups of attributes Y and X that are subsets of R specifies a constraint on the possible tuple that can make a relation
What Command You Use What Day of the week were you born
For the relations answer the following queries in SQL Street (name, location, city) House (number, street_name) Lives (name, house_number) (i) Obtain the names of persons who liv
why shadow copy technique is used?
Primary Index In primary index, there is a one-to-one relationship among the entries in the index table and the records in the major table. Primary index can be of two types:
External failure : A failure can also result because of an external cause, such as earthquakes, fire, floods, etc. The database must be duly backed up to avoid troubles occurring d
Attributes and its types explain?
What is a database? Database - Basically in simple terms A database is a collection of inter related data and/or information stored so which it is available to several users
discuss the purpose of the concurrency control?
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