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Slide 1 Relational Algebra Maybe -- SQL Slide 2 Confused by Normal Forms ? 3NF BCNF 4NF If a database doesn’t violate 4NF (BCNF) then it doesn’t violate BCNF (3NF) !…
Slide 1 Lecture 22: Relational Algebra Friday, November 19, 2004 Slide 2 DBMS Architecture How does a SQL engine work ? SQL query relational algebra plan Relational algebra…
Relational Algebra Maybe -- SQL Confused by Normal Forms ? 3NF BCNF 4NF If a database doesn’t violate 4NF (BCNF) then it doesn’t violate BCNF (3NF) ! Natural Join Notation:…
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Relational Algebra Maybe -- SQL Confused by Normal Forms ? 3NF BCNF 4NF If a database doesn’t violate 4NF (BCNF) then it doesn’t violate BCNF (3NF) ! Natural Join Notation:…
Lecture 10: Relational Algebra 1 Relational Algebra A formalism for creating new relations from existing ones Its place in the big picture: Declarative query language Algebra…
Lecture 10: Relational Algebra 1 Relational Algebra A formalism for creating new relations from existing ones Its place in the big picture: Declarative query language Algebra…