Classification of dbms users

Answer 1

(1) Application Programmers:

nApplication programmer is the person who is responsible for implementing the required functionality of database for the end user. Application programmer works according to the specification provided by the system analyst.

(2) End Users:

nEnd users are those persons who interact with the application directly. They are responsible to insert, delete and update data in the database. They get information from the system as and when required.

There are several categories of end users:

n Casual end users occasionally access the database, but they may need different information each time. They use a sophisticated database query language to specify their requests and are typically middle- or high-level managers or other occasional browsers.

n Naive or parametric end users make up a sizable portion of database end users. Their main job function revolves around constantly querying and updating the database, using standard types of queries and updates-called canned transactions-that have been carefully programmed and tested. The tasks that such users perform are varied:

n Bank tellers check account balances and post withdrawals and deposits.

n Reservation clerks fur airlines, hotels, and car rental companies check availability for a given request and make reservations.

n Clerks at receiving stations for courier mail enter package identifications via bar codes and descriptive information through buttons to update a central database of received and in-transit packages.

(3) Sophisticated end users include engineers, scientists, business analysts, and others who thoroughly familiarize themselves with the facilities of the DBMS so as to implement their applications to meet their complex requirements.

(4) Stand-alone usersmaintain personal databases by using ready-made program packages that provide easy-to-use menu-based or graphics-based interfaces. An example is the user of a tax package that stores a variety of personal financial data for tax purposes.