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Differentiate between a subquery and a join
If we need to acquire information from one or more tables after that either subquery or join can be used. If the columns which are to appear in the result table are from different tables after that a join must be employed.
The advantages of a database management system (DBMS) include :- Data integrity and elimination of duplication.
One-way Associations When an association is traversed only in the one direction, then it is implemented as a pointer i.e.an attribute which contains an object reference. If mu
Define average latency time. The average latency time of the disk is one-half the time for a full rotation of the disk.
anyone have a textbook solutions case fair, 8 edition of vol 1 ?, please give me
(a) What is a Sub-Query? (b) What is the difference between a scalar sub-query and a tabular sub-query? (c) Write an equivalent SQL statement to get the Name of Product wh
What are the two approaches to store relations in distributed database? a) Replication b) Fragmentation
Primary Key The primary key is the candidate key that is selected by the database designer as the principal denotes of identifying entities within an entity set. The left candi
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
Before we talk about the relational model in more detail, let us first define some very basic terms used in this model. Tuple Every row in a table shows a record and is cal
prototype of a distributed information system for a national car part retail outlet chain.
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