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SQL

SQL

SQL. Some interesting facts about SQL:. Full name of SQL --- S tructural Q uery L anguage Old name --- SEQUEL ( S tructural E nglish QUE ry L anguage) First developed at IBM's San Jose (now Almaden) Research Lab. in 1974. Over 100 SQL-based products in the market.

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665 views • 66 slides
Database Design &Implementation

Database Design &Implementation

Database Design &Implementation First priority of database management: Never lose the content of an operational database. This ability to automatically preserve data off-line is called persistence .

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760 views • 33 slides
UFCEKG-20-2 Data, Schemas & Applications

UFCEKG-20-2 Data, Schemas & Applications

UFCEKG-20-2 Data, Schemas & Applications. Lecture 8 Database Theory & Practice (2) : The Relational Data Model. Origins of the Relational Model. The relational model was developed by EF Codd in the early 1970s.

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337 views • 22 slides
SQL ?? 2

SQL ?? 2

SQL ?? 2. pp.194-227. Data (EMPL & DEPT) p.194. DEPT( DeptNo , DeptName , FloorNo ) EMPL ( EmpNo , EmpName , Title, Manager, Salary, DNO). c reate table DEPT ( DeptNo int , DeptName varchar (4) not null, Floor int , primary key ( DeptNo ) ); c reate table EMPL ( EmpNo varchar (4),

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298 views • 18 slides
Ch. 4 Relational Algebra (2)

Ch. 4 Relational Algebra (2)

Ch. 4 Relational Algebra (2). Exercises. Queries in Ch.4 (p.161, p.166). Queries in Ch.4 (p.161, p.166). EMPL ( EmpNo , EmpName , Title, Manager, Salary, DNO) (p.161) DEPT ( DeptNo , DeptName , Floor) (p.166)

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286 views • 14 slides

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