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The clause in SQL which specifies that the query result should be sorted in ascending or descending order based upon the values of one or much more columns is
Ans : Order by
The clause in SQL which specifies that the query result must be sorted in ascending or descending order based upon the values of one or much more columns is ORDER BY. (ORDER BY clause is utilized to arrange the result of the SELECT statement)
Depending upon the rules we have found, we can classify the locks into two types. Shared Lock: A transaction might be acquiring shared lock on a data item in order to read it
Explain what is RDBMS ? RDBMS - RDBMS is a database management system (DBMS) which stores data within the form of relations. Relational databases are powerful since they need f
INSERT INTO command : Values can be inserted for all columns or for the selected columns Values can be given by sub query. In place of values parameter substitution
Consider the E/R schema with weak entity sets shown below. Come up with the SQL CREATE TABLE statements (with appropriate primary key, unique and foreign key constraints). Include
entity relationship diagram about finance
Vertical Fragmentation- Vertical fragmentation groups together only those attributes in a relation that are used jointly by various important transactions. A vertical fragment is d
Mention the several levels in security measures. A) Database system B) Operating system C) Network D) Physical Human
Types of Locks There are two necessary types of locks: Binary lock : This locking mechanism has two states for to a data item: locked or unlocked Multiple-mode loc
Describe the storage structure of indexed sequential files and their access method. Ans: Index offers a lookup capability to rapidly reach the vicinity of the desired record.
real life situations where database management system are most suitable
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