1.2 KiB
1.2 KiB
- Write relational schema and integrity constraints for your relations. Provide the relevant SQL DDL statements to implement your ERD. a) Pay careful attention to your choice of datatypes and consistency. b) Consider referential integrity and nullable/not nullable attributes. c) Make comment on the Normalisation level of your schemas. d) Providing relational algebra statements is a bonus.
Assessment: 2. SQL DDL (30%) You will provide a PDF Þle that contains your Relational Schemas (RS), Integrity Constraints (IC), i.e.:
Mec_Repair(MID:integer, Name:string, Brand:string),
ICs: MID (Primary key), Brand (Foreign key referencing Car)
Normalisation reports: i.e. 3NF
DDL statements:
Car(Brand:string, weight:integer),
ICs: Brand (Primary key)
Normalisation reports: i.e. 3NF
DDL statements:
Normalisation reports for each RSs and the DDL statements written in SQL.
You will receive full mark if your RS and ICs matches with your ERD. Otherwise, you we will reduce your mark based on the followings: a) Typo for SQL code -2pts. b) Reporting wrong Normalisation level -5pts. c) IC mismatch from ERD to ICs or from ICs to DDL -10 pts. d) Providing Relational Algebra statements (Bonus 10 pts)