TAILIEUCHUNG - Lecture Business system development - Lecture 14: Structuring system logical requirements

Lecture 14 - Structuring system logical requirements. In this lecture, we will: Define four types of business rules, compare the capabilities of class diagrams vs. E-R diagrams, relate data modeling to process and logic modeling. | Business System Development CSC581 Lecture 14 Structuring System Logical Requirements 2 Summary of the previous lecture In previous lecture, we : Defined key data modeling terms. Drew entity-relationship (E-R) and class diagrams to represent common business situations. Explained the role of conceptual data modeling in IS analysis and design. Distinguished between unary, binary, and ternary relationships. Outlines We today’s lecture we will: Define four types of business rules. Talk about the class diagrams Compare the capabilities of class diagrams vs. E-R diagrams. Relate data modeling to process and logic modeling Business Rules Specifications that preserve the integrity of the logical data model Four types Entity integrity: unique, non-null identifiers Referential integrity constraints: rules governing relationships Domains: valid values for attributes Triggering operations: other business rules regarding attribute values Domains The set of all data types and ranges of values .

• Thương mại điện tử
• Business system development
• Information systems
• Information systems analysis
• Application software
• Systems development
• Structuring system logical requirements
• Information system
• Business management information system
• Management information system
• Business management
• Interorganizational system development
• Determining system requirements
• System implementation
• Systems Development Life Cycle
• Systems development projects
• Selecting systems development projects
• Automated tools