Discuss the decisions made during physical database design.

Short Answer

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Physical database design involves key decisions like selecting the storage and memory, deciding the organization of database files and their indexing, and considering several factors like cost, data types, security features, backup and recovery methods, and anticipated workload and growth of data.

Step by step solution

01

Understanding Physical Database Design

Physical database design refers to the process of selecting and describing the storage and retrieval techniques for the database. It involves decision-making to arrange data in an efficient manner compatible with the anticipated workload.
02

Discussing Storage and Memory Decisions

One of the primary decisions in physical database design involves selecting the type, size and configuration of storage and memory. Factors like amount of data, software and OS compatibility, data accessibility, speed, reliability, cost, and the anticipated growth of data are considered during this process.
03

Discussing Database File Organization and Indexing

The organization of the database files and their indexes is also critical. This refers to how the data is stored and indexed on the disk. Strategies for this could include sequential, indexed sequential, or direct file organization, and B-trees, B+ trees, or hash indexes. The choice is made usually based on how the data will be queried and manipulated.
04

Discussing Other key Decisions

Other decisions during physical database design may include choosing suitable types of database models, deciding upon backup and recovery methods, considering security features, the interdependencies between data, and the selection of data types and sizes.

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