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what are the purposes of dbms in details
What is the difference between internal tables and extract datasets? The lines of an internal table always have the similar structure. By using extract datasets, you can ha
sql is relationally complete-justify
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
QUESTION (a) Consider a car database consisting of car model, car make, car origin, Engine capacity, color, cost.
If R1 and R2 are two relations or functions, then the result of R3 = R1 × R2 is the combination of tuples that are in R1 and R2. The product is associative and commutative. Degr
Explain the concept of QBE? Query-by-example represents a visual/graphical approach for accessing information in a database by the use of query templates called as skeleton tab
What are the different kinds of database end users? Discuss the major activities of each? End-Users - End-users are the people whose jobs need access to the database for que
What is a heterogeneous distributed database? In a heterogeneous distributed database, dissimilar sites may use different schemas, and dissimilar dbms s/w. The sites may not be
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
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