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CSC271 Database Systems

CSC271 Database Systems

CSC271 Database Systems. Lecture # 12. Summary: Previous Lecture. Row selection using WHERE clause WHERE clause and search conditions Sorting results using ORDER BY clause SQL aggregate functions. DreamHome Case Study. Consist of following tables:

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755 views • 45 slides
CSC271 Database Systems

CSC271 Database Systems

CSC271 Database Systems. Lecture # 32. Summary: Previous Lecture. Database security Countermeasure: computer-based controls DBMSs and web security Transaction management Transaction Properties of transaction. Components of DBMS. Components of Database Manager.

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947 views • 44 slides
CSC271 Database Systems

CSC271 Database Systems

CSC271 Database Systems. Lecture # 17. Summary: Previous Lecture. View updatability Advantages and disadvantages of views View materialization. Transactions. SQL defines transaction model based on COMMIT and ROLLBACK

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358 views • 23 slides
CSC271 Database Systems

CSC271 Database Systems

CSC271 Database Systems. Lecture # 7. Summary: Previous Lecture. Relational keys Integrity constraints Views. The Relational Algebra and Relational Calculus. Chapter 4. Introduction. Relational algebra and relational calculus are formal languages associated with the relational model

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421 views • 23 slides
CSC271 Database Systems

CSC271 Database Systems

CSC271 Database Systems. Lecture # 16. Summary: Previous Lecture. Integrity Enhancement Feature Referential integrity, general constraint Data definition CREATE/ALTER/DROP TABLE CREATE/DROP INDEX View CREATE/DROP VIEW View Resolution and restrictions. View Updatability.

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449 views • 22 slides

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