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āļ āļēāļĐāļē   SQL (Structured Query Language)
āļ§āļąāļ•āļ–āļļāļ›āļĢāļ°āļŠāļ‡āļ„āđŒ ,[object Object],[object Object],[object Object]
User Program DBMS Relational Calculus-What Relational Algebra-How Where is SQL?
āļ āļēāļĐāļē  SQL (Structured Query Language) ,[object Object],[object Object],[object Object],[object Object]
āļ„āļ§āļēāļĄāļŦāļĄāļēāļĒāļ‚āļ­āļ‡  SQL ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
āđ‚āļŦāļĄāļ”āļāļēāļĢāļ—āļģāļ‡āļēāļ™āļ‚āļ­āļ‡   SQL ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
āļĨāļąāļāļĐāļ“āļ°āļāļēāļĢāļ—āļģāļ‡āļēāļ™āļ‚āļ­āļ‡āļ āļēāļĐāļē   SQL āđ€āļĨāļ·āļ­āļāļ„āđˆāļēāļ„āļ­āļĨāļąāļĄāļ™āđŒ  FirstName āļ—āļĩāđˆāļ„āļ­āļĨāļąāļĄāļ™āđŒ  EmployeeNumber=100 SQL Jacksoni Murugan 40 Copley Alea 300 Caldera Jerry 700 Abermany Mary 100 LastName FirstName EmployeeNumber Mary FirstName
āļ›āļĢāļ°āđ€āļ āļ—āļ‚āļ­āļ‡āļ„āļģāļŠāļąāđˆāļ‡   SQL ,[object Object],[object Object],[object Object],Class Birthday Name StudentID
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],āļ›āļĢāļ°āđ€āļ āļ—āļ‚āļ­āļ‡āļ„āļģāļŠāļąāđˆāļ‡   SQL (Continued)
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],āļ›āļĢāļ°āđ€āļ āļ—āļ‚āļ­āļ‡āļ„āļģāļŠāļąāđˆāļ‡   SQL (Continued)
SQL Data Type Long integer  āļ•āļąāļ§āđ€āļĨāļ‚āļˆāļģāļ™āļ§āļ™āđ€āļ•āđ‡āļĄāļ‚āļ™āļēāļ”   4   bytes integer Short integer  āļ•āļąāļ§āđ€āļĨāļ‚āļˆāļģāļ™āļ§āļ™āđ€āļ•āđ‡āļĄāļ‚āļ™āļēāļ”   2  bytes, +-32767,  save storage Smallint āļ•āļąāļ§āđ€āļĨāļ‚āļ—āļĻāļ™āļīāļĒāļĄāļ—āļĩāđˆāļŠāļēāļĄāļēāļĢāļ–āļāļģāļŦāļ™āļ”āļ§āđˆāļēāļ•āđ‰āļ­āļ‡āļāļē āļĢāļ•āļąāļ§āđ€āļĨāļ‚āļāļĩāđˆāļŦāļĨāļąāļ   (n) Float(n) āļ•āļąāļ§āđ€āļĨāļ‚āļ—āļĻāļ™āļīāļĒāļĄ Real āļ•āļąāļ§āđ€āļĨāļ‚āļ—āļĻāļ™āļīāļĒāļĄāļ—āļĩāđˆāļāļģāļŦāļ™āļ”āļ§āđˆāļēāļ•āđ‰āļ­āļ‡āļāļēāļĢāļ•āļąāļ§āđ€āļĨāļš (p)  āđāļĨāļ°āļ—āļĻāļ™āļīāļĒāļĄ   (s)  āļāļĩāđˆāļŦāļĨāļąāļ Numeric(p,s) Time Date āđ€āļāđ‡āļšāļ‚āđ‰āļ­āļ„āļ§āļēāļĄāļ„āļ§āļēāļĄāļĒāļēāļ§ āđ„āļĄāđˆāđ€āļāļīāļ™   size  āļ—āļĩāđˆāļāļģāļŦāļ™āļ” Varchar(size) āđ€āļāđ‡āļšāļ‚āđ‰āļ­āļ„āļ§āļēāļĄāļ„āļ§āļēāļĄāļĒāļēāļ§āļ„āļ‡āļ—āļĩāđˆāđ€āļ—āđˆāļēāļāļąāļš   size  āļ—āļĩāđˆāļāļģāļŦāļ™āļ” Char(size)
SQL  āļŠāļģāļŦāļĢāļąāļš   Data Definition ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SQL  āļŠāļģāļŦāļĢāļąāļš   Data Definition: CREATE ,[object Object],[object Object],[object Object],[object Object],[object Object]
Primary Key Constraint: ALTER ,[object Object],[object Object],[object Object],[object Object]
Composite Primary Key Constraints: ALTER ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Foreign Key Constraint: ALTER ,[object Object],[object Object],[object Object],[object Object]
āļāļēāļĢāļĨāļš   Database Objects: DROP ,[object Object],[object Object],[object Object]
āļāļēāļĢāļĒāļāđ€āļĨāļīāļ   Constraint: ALTER & DROP ,[object Object],[object Object]
Modifying Data using SQL ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Adding Data: INSERT ,[object Object],[object Object],[object Object],[object Object]
Changing Data Values: UPDATE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Example 44 KRONE 26 Jack 22 MIke DeptID EmpName
Deleting Data: DELETE ,[object Object],[object Object],[object Object],[object Object],[object Object]
Example 44 Krone 30 39 Jack 29 32 John 28 31 Mike 27 DeptID EmpName EmpID

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āļšāļ—āļ—āļĩāđˆ 6 āļāļēāļĢāđ€āļ‚āļĩāļĒāļ™āđ‚āļ›āļĢāđāļāļĢāļĄāđ€āļžāļ·āđˆāļ­āđāļāđ‰āđ„āļ‚āļ‚āđ‰āļ­āļĄāļđāļĨ&āļĨāļš
āļšāļ—āļ—āļĩāđˆ 6 āļāļēāļĢāđ€āļ‚āļĩāļĒāļ™āđ‚āļ›āļĢāđāļāļĢāļĄāđ€āļžāļ·āđˆāļ­āđāļāđ‰āđ„āļ‚āļ‚āđ‰āļ­āļĄāļđāļĨ&āļĨāļšāļšāļ—āļ—āļĩāđˆ 6 āļāļēāļĢāđ€āļ‚āļĩāļĒāļ™āđ‚āļ›āļĢāđāļāļĢāļĄāđ€āļžāļ·āđˆāļ­āđāļāđ‰āđ„āļ‚āļ‚āđ‰āļ­āļĄāļđāļĨ&āļĨāļš
āļšāļ—āļ—āļĩāđˆ 6 āļāļēāļĢāđ€āļ‚āļĩāļĒāļ™āđ‚āļ›āļĢāđāļāļĢāļĄāđ€āļžāļ·āđˆāļ­āđāļāđ‰āđ„āļ‚āļ‚āđ‰āļ­āļĄāļđāļĨ&āļĨāļšPriew Chakrit
 
āļāļēāļĢāđ€āļ‚āļĩāļĒāļ™āđ‚āļ›āļĢāđāļāļĢāļĄāđ€āļžāļ·āđˆāļ­āđāļāđ‰āđ„āļ‚āļ‚āđ‰āļ­āļĄāļđāļĨ&āļĨāļš
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Sql theory

  • 1. āļ āļēāļĐāļē SQL (Structured Query Language)
  • 2.
  • 3. User Program DBMS Relational Calculus-What Relational Algebra-How Where is SQL?
  • 4.
  • 5.
  • 6.
  • 7. āļĨāļąāļāļĐāļ“āļ°āļāļēāļĢāļ—āļģāļ‡āļēāļ™āļ‚āļ­āļ‡āļ āļēāļĐāļē SQL āđ€āļĨāļ·āļ­āļāļ„āđˆāļēāļ„āļ­āļĨāļąāļĄāļ™āđŒ FirstName āļ—āļĩāđˆāļ„āļ­āļĨāļąāļĄāļ™āđŒ EmployeeNumber=100 SQL Jacksoni Murugan 40 Copley Alea 300 Caldera Jerry 700 Abermany Mary 100 LastName FirstName EmployeeNumber Mary FirstName
  • 8.
  • 9.
  • 10.
  • 11. SQL Data Type Long integer āļ•āļąāļ§āđ€āļĨāļ‚āļˆāļģāļ™āļ§āļ™āđ€āļ•āđ‡āļĄāļ‚āļ™āļēāļ” 4 bytes integer Short integer āļ•āļąāļ§āđ€āļĨāļ‚āļˆāļģāļ™āļ§āļ™āđ€āļ•āđ‡āļĄāļ‚āļ™āļēāļ” 2 bytes, +-32767, save storage Smallint āļ•āļąāļ§āđ€āļĨāļ‚āļ—āļĻāļ™āļīāļĒāļĄāļ—āļĩāđˆāļŠāļēāļĄāļēāļĢāļ–āļāļģāļŦāļ™āļ”āļ§āđˆāļēāļ•āđ‰āļ­āļ‡āļāļē āļĢāļ•āļąāļ§āđ€āļĨāļ‚āļāļĩāđˆāļŦāļĨāļąāļ (n) Float(n) āļ•āļąāļ§āđ€āļĨāļ‚āļ—āļĻāļ™āļīāļĒāļĄ Real āļ•āļąāļ§āđ€āļĨāļ‚āļ—āļĻāļ™āļīāļĒāļĄāļ—āļĩāđˆāļāļģāļŦāļ™āļ”āļ§āđˆāļēāļ•āđ‰āļ­āļ‡āļāļēāļĢāļ•āļąāļ§āđ€āļĨāļš (p) āđāļĨāļ°āļ—āļĻāļ™āļīāļĒāļĄ (s) āļāļĩāđˆāļŦāļĨāļąāļ Numeric(p,s) Time Date āđ€āļāđ‡āļšāļ‚āđ‰āļ­āļ„āļ§āļēāļĄāļ„āļ§āļēāļĄāļĒāļēāļ§ āđ„āļĄāđˆāđ€āļāļīāļ™ size āļ—āļĩāđˆāļāļģāļŦāļ™āļ” Varchar(size) āđ€āļāđ‡āļšāļ‚āđ‰āļ­āļ„āļ§āļēāļĄāļ„āļ§āļēāļĄāļĒāļēāļ§āļ„āļ‡āļ—āļĩāđˆāđ€āļ—āđˆāļēāļāļąāļš size āļ—āļĩāđˆāļāļģāļŦāļ™āļ” Char(size)
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
  • 20.
  • 21.
  • 22. Example 44 KRONE 26 Jack 22 MIke DeptID EmpName
  • 23.
  • 24. Example 44 Krone 30 39 Jack 29 32 John 28 31 Mike 27 DeptID EmpName EmpID