IELM 230: Industrial Data Systems Course topics: - Relational Database Design - DB development and optimized usage - DB backed web-applications

Introduction Database Collection of information about a system. Database Management System (DBMS): Program(s) that help in: Organizing the information, Defining the database, Constructing the database, and Manipulating its contents.

Why use a DBMS Why not just store everything in s, spreadsheets, …, and use a search program? DBMS provides: - Faster access (e.g. 1,000’s price checks per sec in PnS) - Controlled access of information (e.g. Personnel data) - Information consistency (controlled redundancy) - Multiple user-interfaces (views) - Enforced data integrity and domain constraints

Types of DB users DBA Staff: DB Design, DB Implementation, DBMS Maintenance Parametric end users: via Application Program Interface (API) Example: Clerk at PnS, Teller in bank Casual end users: IT engineers with direct access to DB Applications programmers: IT engineers who will write API’s

Architecture

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