The performance of a program is often determined by the efficiency of a database and how its operations are used on it.
The efficiency of using a database and downloading only necessary data to the application server can be critical to the general speed of a program, so operations on a database should be as low as possible.
We need to follow a rule that helps us to maintain an operation on a database in good performance.
In order to ensure correct performance, we must ensure that we follow these steps:
- Get only the required rows from a table: For example, if we need to get a flight from America Airlines from the
sflight
table, we must use the proper conditions inWHERE
. When it comes to the effective use of all data, what we can get to specify the condition is really important. - Get only the required columns from a table: In every
SELECT
statement, the result set should only contain a column that you really need. If we need to get data with regard to the...