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Emergence of Client Server Architecture
Some of the pioneering work that was completed by some of the relational database vendors permitted the computing to be distributed on multiple computers on network using contemporary technologies having:
What is called as recursive partitioning? The system repeats the splitting of the input unless each partition of the build input fits in the memory. Such partitioning is known
Describe Parameteric end users? Parametric end users might be given update access, but are commonly not permitted to change the structure of data.
Explain mechanism of nested queries? SQL gives a mechanism for nesting subqueries. A subquery is a select from where expression that is nested within one more query. A common u
brief history,definition,current trends and future trends if any of data fragmentation
What is a SELECT operation? The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
Modify a sequence: ALTER SEQUENCE SEQSS INCREMENT 2 MAXVALUE 3000; Removing a sequence: DROP SEQUENCE SEQSS;
vertical fragmentation
The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
Special comparison operator used in where Clause a. between. ...and...It gives range among two values (inclusive) Example: SELECT ENAME, SAL FROM EMP WHERE SAL BETWE
Operator Precedence The basic operators used in SQL are * / - + Operators of the similar priority are evaluated From Left to right Parentheses are used to force priorit
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