Discussion 2_database
250 words+
1. Please describe the concept of (1) Schema, (2) Primary Key and Foreign Key used for database system.
2. Except the listed 6 algebra operations such as select, join/intersection, project, ... is there any potential algebra operand may/can be used for database management processing.
5 years ago 5
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- Adatabaseschema.docx
- Databases.pdf
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