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What is an Operand?
The data on which the operation is to be performed is known as an Operand
Consider the following frequency counts of some itemsets in a transaction database r : freq({A}, r) = 0.405 freq({B}, r) = 0.510 freq({C}, r) = 0.303 freq({A
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
Consider employee table of (i) and list names of department(s) for which average salary for department is more than 10,000. (SELECT d_name FROM dept WHERE d_code IN (SELECT d_c
Components of database manager The above functions are reached by the database manager. The major elements of a database manager are: Authorisation control: This mod
The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
What is the way a particular application views the data from the database that the application uses? Sub schema is the way a particular application views the data from the data
Define tuple variable? Tuple variables are used for comparing two tuples in the same relation. The tuple variables are explained in the from clause by way of the as clause.
Eliminate Repeating Groups The problem is, "Find out the list of employees, who knows DB2". For this problem we require to perform an awkward scan of the list looking for re
Give an example of Operations from the functions of a bank. For creation of a saving account, you can write: bank::: create -savings-account (customer)->account. For oper
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
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