A database interrogation is a major benefit of the database management approach, where end users can query (“ask”) the database
for information. The Structured Query Language (SQL) is an international standard query language found in many DBMS packages. The basic form of a SQL query is: SELECT . . . FROM . . . WHERE . . . For example, if we have the following STUDENTS table:
Transaction processing systems are used in business for operational support. This information system processes data as transactions usually in automated manner.
Automation causes efficiency and reduced human intervention, which will end up <em>reduced operational costs</em>.
