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What is the aim of logical schema ? The main motive of the logical schema is to ensure the portability of procedures and models on various physical schemas at runtime.
A Relation Schema represented by R(A1, A2, ..., An) is made up of the relation name the list of attributes and R Ai that it contains. A relation is described as a set of tuples
What are axioms? Axioms or rules of inference give a simpler technique for reasoning about
What are the problems if one were not to normalize? When do these problems surface? Ans: Database normalization, sometimes considered to as canonical synthesis, is
Section A: Use the following tables to create a database called College. Use SQL commands. Student stuid(primary) lastName firstName
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
Which is another name for weak entity? Child is another name of weak entity.
What is known as fudge factor? The number of partitions is enhanced by a small value called the fudge factor, which is usually 20 percent of the number of hash partitions compu
Regional Gardens has many nurseries, including Wagga Wagga, Bathurst, Albury, Orange, and Dubbo. Each nursery is known by its campus code, eg WW, B, A, O and D respectively. Additi
intent locking
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