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Questions and Answers
What is a database?
A shared, integrated computer structure that stores a collection of data, as well as, metadata.
What is metadata?
Data about the data.
What does DBMS stand for?
Database Management System.
The stages included in the database life cycle (DBLC) begins with the analysis of the ______.
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Which phase involves creating conceptual models and normalizing data tables?
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The purpose of the Physical Design phase is to reduce data redundancy.
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Match the following terms with their definitions:
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Study Notes
Database Life Cycle
- The Database Life Cycle (DBLC) is a set of stages included for implementing a database, starting with requirement analysis and ending with monitoring, modification, and maintenance.
- Stages include requirement analysis, logical design, physical design, implementation, post-design, monitoring, modification, and maintenance.
- The DBLC ensures the database is designed efficiently and meets the organization's needs.
Requirement Analysis Phase
- This phase involves evaluating the data requirements of an organization to design a database that produces the necessary information.
- It includes interviewing both data producers and users to understand the business objectives which dictate database design.
Logical Design Phase
- This phase involves creating conceptual models for the database and normalizing data tables.
- A conceptual model describes the database structure using an Entity-Relationship (ER) diagram, representing the tables, fields, primary keys, and relationships between tables.
- Data table normalization applies rules to reduce redundancy and address design problems, ensuring the database meets notional and logical data structure requirements.
Physical Design Phase
- This stage focuses on optimizing database performance, specifically by finding ways to accelerate the performance of the Relational Database Management System (RDBMS).
- The goal is to speed up data extraction and insertion, which are typically the slowest operations in RDBMS, through database design manipulation.
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Description
Explore the stages of the Database Life Cycle (DBLC), from requirement analysis to monitoring and maintenance. Understand how each phase contributes to the efficient design and implementation of a database that meets organizational needs.
