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Database Design Development

 
The support and documentation provided by major database vendors like Oracle and IBM has helped to reduce manual effort for database management. Now, the demand for a good database design depends much on the capability of Database Architects.

Database development for relational database design consists of analyzing the requirements of the proposed system environment; identification of entities and relationships, and then creating an entity relationship (E-R) diagram in conformity with the system.

This is not a one-shot process; certain iterations come as part of verification and validation process, whereupon a database schema is created. Important database concepts like Normalization, Specialization, Generalization, and Aggregation have to be considered to model the database. Database performance depends on an efficient design and standard coding scheme.

Of course design is important, but database maintenance is equally importance. Tri-Force’s reference for maintenance and upgrade tasks pertaining to databases ex: Oracle 10g is the standard documentation released by Oracle Corporation. When Sun Microsystems merged with Oracle Corporation, MySQL, one of the most widely used open source database has also became an asset of Oracle. That apart, we also refer to the reference manuals of PostgreSQL for getting maintenance related information.

We first classify the category of users who are authorized to handle the database. The next step is to prepare a detailed list of users along with their roles and responsibilities to clearly identify the nature of tasks related to the database. For example, we can classify the users in four parts:

  • Administrative Personnel
  • Security Personnel
  • Implementation Personnel
  • Networking Personnel

After classifying the user group, our primary task is to ensure that each user gets the required output from the database. We make sure that the existing database applications are utilizing the hardware platform to the utmost.

Thereafter, our first task is to check the logical and physical mechanism used to store data. The order in which data is logically stored in the database heavily influences the performance of the database and of the system in general.

Finally, we test that the database design addresses the following issues:

  • System on which the database is installed functions properly and factors for computer system performance optimization are working.
  • What is the behavior of the database during data access operation?
  • Backup and recovery strategies are formulated along with the database design—because whenever changes are implemented, a data backup becomes essential.
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