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Ryan 2023-06-14 20:00:46 +08:00
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@ -1004,8 +1004,7 @@
id:: 6489683b-7d47-4246-afdf-83fdb35a00f6
- There are attributes that apply to some (but not all) instances of an entity.
- The instances of a potential subclass participate in a relationship unique to that subclass.
- LATER SQL
- LATER Designing databases
- DONE Designing databases
- Understand Database Design Methodology #flashcard
- Conceptual database design
- The process of constructing a model of the data used in an enterprise, independent of all physical considerations.
@ -1013,11 +1012,13 @@
- Maps the conceptual data model on to a logical model (e.g. relational), but independent of a particular DBMS and other physical considerations.
- Physical database design
- The process of producing a description of the implementation of the database (tailored to specific DBMS);
- general steps for Database Design Methodology.
- general steps for Database Design Methodology. #flashcard
- Gather requirements
- Conceptual database design
- Logical database design
- Physical database design
- LATER SQL
- purpose and importance of SQL.
- DONE Block 3
collapsed:: true
- DONE DB transaction management