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Define Aggregate functions and what aggregate functions supported by the MySQL
To calculate a summary value from a set of individual values and uses one of the functions known as aggregate functions.
These are so called for the reason that they operate on aggregates (groups) of values.
Aggregate functions include COUNT ( ) which counts records or values in a query result; MAX( ) and MIN( ) which find largest and smallest values; SUM( ) and AVG( )and which produce sums and means of values.
Why is database redesign necessary? Database redesign is essential for two reasons. First, redesign is essential both to fix mistakes made during the initial database design. S
State The position of object at any moment is called state. An object can have many states depend upon time. After receiving some input instructions, the object can change its
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
Distributed Database Management System
Using SQL create a view RS for the relations R and S. The view consists of the columns A and D renamed as X and Y in that order. Insert a tuple into it. Show the contents of t
Can we delete data element, which is being used by table fields. No we cant delete data element.
What are called journaling file systems? File systems that support log disks are known as journaling file systems.
what is database management system? & why it is required?
My cut off date is very soon in a Database subject and i dont know how to solve anything in it
Index And Tree Structure Let us talk about the data structure that is used for creating indexes. Can we use Binary Search Tree (BST) as Indexes? Let us initial reconsider
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