Types of Data Models Conceptual Data Models Implementation
- Slides: 31
ประเภทของแบบจำลองขอมล (Types of Data Models) Conceptual Data Models Implementation Data Models
พนฐานการสรางแบบจำลองขอมล (Data Models Basic Building Blocks) Entities Attributes Relationships Constraints
พนฐานการสรางแบบจำลองขอมล (Data Models Basic Building Blocks) - ความสมพนธระหวาง Entities 1: 1 1: M Attributes M : M หรอ M : N Relationships Constraints
แบบจำลองฐานขอมล (Database Model) Hierarchical Database Model Network Database Model Relational Database Model Object-Oriented Database Model Multidimensional Database Model
โครงสรางขอมลเชงสมพนธ (Relational Data Structure) Primary Key : PK Attribute (Field, Column) Cardinality Tuple (Record, Row) Relation (Table, File) Degree Domain : Rang of Data in each Field Foreign Key : FK
กฎ 12 ขอของคอดด (Codd’s 12 Relational Database Model) • • • Information Guaranteed Access Systematic Treatment of Null Dynamic On-Line Catalog Based on the Relational Model Comprehensive Data Sublanguage View Updating High-Level Insert, Update and Delete Physical Data Independence Logical Data Independence Integrity Independence Distribution Independence Nonsubversion
คย (Keys) Candidate Key : CK Primary Key : PK Alternate Key / Secondary Key Foreign Key : FK Composite/Concatenated/Compound Key Super Key
- Nursing theories
- Conceptual physical and mathematical models are used to
- The conceptual data model is the set of concepts that:
- What is the difference between models and semi models
- Master data management plan
- Design and implementation of data plane
- Modular nursing
- Types of logic models
- Taba's model of curriculum development
- Which geometric modeling has ambiguous representation
- What is bnf in hci
- Types of forecasting models
- Curriculum development model
- Types of logic models
- Types of transportation models
- L
- Types of regression models
- Types of mathematical models
- Types of pharmaceutical business models
- Conceptual data diagram
- Conceptual data model
- High level conceptual data model
- Composite attribute
- Mining complex types of data
- Data types in data representation
- Mining complex types of data in data mining
- Cs 412 introduction to data mining
- Delay models in data networks
- Simplified communication
- Data intensive grid service models
- Partial specialization rule example
- Completeness constraint example