Determination of overall information needs from a management perspective
Developing & administering the policies, procedures, practices & plans for definition, organisation, protection & efficient utilisation of data
Encompasses all corporate data whether computerised or not
Normally responsible for computerised systems only
Management & Co-ordination function
Technical function responsible for:
physical database design
Comparison of Roles Data Administrator Database Planning System Specification Conceptual Design Logical Design Database Administrator Major Role DBMS Selection Application Design Physical Design Prototyping Implementation Data Conversion & Loading Testing Operational Maintenance Major Role Minor Role Minor Role
What is it?
“ To successfully set up and manage an environment in which the data resource is effectively used”
THERE ARE THREE MAIN FUNCTIONS:
1 . Administration & management of Data Content
2. Administration & management of Data Structure
3. Administration & management of the Physical Database
1. Administration & management of Data Content
which data is to be held on the database
which users have what kind of access to the database
which kind of users have access to individual items of data
which consistency checks must be maintained
when should data be removed
2. The administration and management of data structure.
how many logical databases do we need ?
what is the table column structure ?
how is security to be implemented ?
2. The administration and management of data structure (Cont.)
how are consistency checks made?
how is access to be optimised?
how and when to re-organise the database?
3. The administration and management of the physical database
how many copies should run ?
operating system performance
when and how should we perform backups?
recovery log files
3.The administration and management of the physical database ( cont.)
start-up and shutdown procedures .
what procedures are required to recover from system failures ?