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Why do you go for sorting your query results?
SQL SELECT command to fetch data from MySQL table. Whenever you select rows, the MySQL server is free to return them in any order unless you instruct it or else by stating how to sort the result. However you sort a result set by adding
An ORDER BY section that names column or columns you want to sort by.
What is the use of unique function? UNIQUE function: If UNIQUE is specified then only unique values are used to computed the mean.
Determine the steps of path in association network You can analyse use of paths in association network in the following steps: Examine every operation and see what asso
Explain trigger? Trigger: A database trigger is procedural code which is automatically executed within response to certain events on a particular table in a database. Trigger
Consider the relations given below Borrower (id_no, name) Book (accno., title, author, borrower_idno) (a) Define the above relations as tables in SQL forming real world assumptio
Question : (a) Database Management Systems (DBMS) is the foundation of business intelligence. Explain the following concepts related to DBMS: (i) Entity Relationship Diagr
Using Column aliases Example: To print column names as NAME and ANNUAL SALARY SELECT ENAME "NAME", SAL*12 "ANNUAL SALARY" FROM EMP;
Derived horizontal fragmentation: Some applications may include a join of two or more relations. If the relations are stored at dissimilar locations, there may be a major overhead
Write short notes on transaction state? A transaction may not always complete its implementation successfully such a transaction is termed aborted A transaction must be in o
Describe the primary key functions? Primary Key : The primary key is an attribute or a set of attributes in which uniquely identify a specific example of an entity. Every entit
Explain the conventions for displaying an ER schema as an ER diagram? An E-R Diagram scheme might describe certain constraints to that the contents of a database must conform.
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