'Basic operators' presentation slideshows

Chapter 5

Chapter 5. Relational Algebra and SQL. Father of Relational Model Edgar F. Codd (1923-2003). PhD from U. of Michigan, Ann Arbor Received Turing Award in 1981. More see http://en.wikipedia.org/wiki/Edgar_Codd. Relational Query Languages.

1.79k views • 140 slides

Relational Model and Relational Algebra

Relational Model and Relational Algebra. What is the relational model? Relational algebra?. The relational model is an abstract (mathematical) modeling of a table Relational algebra (RA) is a (mathematical) query language for relations

1.23k views • 85 slides

708 views • 54 slides

Query Execution in Databases: An Introduction

621 views • 41 slides

Database Systems 236363

Database Systems 236363. Relational Algebra. Query Languages. A query An expression that enables extracting data from a database A query language A language for expressing queries. Relational Algebra.

505 views • 40 slides

Relational Algebra

646 views • 35 slides

Relational Algebra

p. Relational Algebra. R & G, Chapter 4. By relieving the brain of all unnecessary work, a good notation sets it free to concentrate on more advanced problems, and, in effect, increases the mental power of the race . -- Alfred North Whitehead (1861 - 1947). Relational Query Languages.

383 views • 30 slides

Relational Algebra

p. Relational Algebra. R & G, Chapter 4. By relieving the brain of all unnecessary work, a good notation sets it free to concentrate on more advanced problems, and, in effect, increases the mental power of the race . -- Alfred North Whitehead (1861 - 1947). Relational Query Languages.

377 views • 29 slides

Relational Algebra

Relational Algebra. R & G, Chapter 4. Relational Query Languages. Query languages : Allow manipulation and retrieval of data from a database. Relational model supports simple, powerful QLs: Strong formal foundation based on logic. Allows for much optimization.

367 views • 29 slides

Google hacking & optimizing search results Faris Aloul November 2011

Google hacking & optimizing search results Faris Aloul November 2011. Contents. What is Google hacking? Basic operators Advanced operators Mixing different operators. What is Google hacking?. It's not hacking into Google servers!

132 views • 13 slides