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LECTURE 4

LECTURE 4. RELATIONAL ALGEBRA. Introduction. Relational algebra defines the theoretical way of manipulating table contents through a number of relational operators These relational operators include; SELECT (or RESTRICT) PROJECT JOIN PRODUCT INTERSECT UNION DIFFERENCE DIVIDE.

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c onsistency without borders

c onsistency without borders. Peter Alvaro , Peter Bailis , Neil Conway, Joseph M. Hellerstein UC Berkeley. The transaction concept. DEBIT_CREDIT: BEGIN_TRANSACTION; GET MESSAGE; EXTRACT ACCOUT_NUMBER, DELTA, TELLER, BRANCH

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