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Why a report generator is used ? Report generator is used for print files on paper.
What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
In problems 1 - 4, you are given the columns of a table, and a set of functional dependencies. Determine the normal form of this table. Remember that the normal form is the HIGHE
What is a query tree? Ans: A query tree, as well known as operator graph, is a tree data structure that corresponds to a relational algebra expression. It denotes the inpu
What are metrics for choosing the best algorithm? Matrices for choosing the best algorithms are as below: Computational complexity Ease of understand ability and im
Scenario 1: Power goes out after the first instruction. What happens?
Explain recovery process after system failure using checkpoint. Ans: Checkpoint scheme or method is an extra component of the log based recovery system. This scheme is used to
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
sql is relationally complete-justify
Backward Recovery (UNDO): In this system the uncommitted changes made by a transaction to a database are undone. Instead the system is reset to the last consistent state of databa
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