Modifying data and data structures.

1. SQL/212 SQL Programming Workshop 3 – Modifying Data, Managing the Database Bookstore SQL212 Module 3

2. SQL212 Contact Information Bookstore SQL212 Module 3 P.O. Box 6142 Laguna Niguel, CA 92607 949-489-1472 http://www.d2associates.com [email_address] Copyright 2001-2009. All rights reserved.

4. SQL/212 SQL Programming Part 1 – Modifying Data Bookstore SQL212 Module 3

5. Bookstore SQL212 Module 3 Relational Database with constraints (from text)

9. Single Row Insert Bookstore SQL212 Module 3 Basic Syntax: Insert [into] <table-name> Values (<value-list>)

10. Single Row Insert Bookstore SQL212 Module 3 Basic Example: insert into sources(source_numb, source_name, source_street) values (22,'Specialty Books', 'Canal Street')

11. Insert Statement Bookstore SQL212 Module 3

12. Sources table after Insert Bookstore SQL212 Module 3

13. Multi-row Insert Bookstore SQL212 Module 3 Basic Syntax: Insert [into] <table-name> Select <select-statement> We will do this after creating a new table later in this module

16. Ingram Book Prices before Update Bookstore SQL212 Module 3

17. Ingram Book Prices after Update Bookstore SQL212 Module 3

19. Delete Bookstore SQL212 Module 3 Example: delete the source we added Delete from sources Where source_numb = 22

20. Delete Bookstore SQL212 Module 3

21. Sources table after Delete Bookstore SQL212 Module 3

23. SQL/212 SQL Programming Part 2– Managing Database Structures Bookstore SQL212 Module 3

28. Create Table Bookstore SQL212 Module 3 Basic syntax: Create table <table-name> <column1> <datatype> <constraints> ,.. <column1> <datatype> <constraints> … <table constraints> Note: often preceded by a drop

29. Temporary Tables Bookstore SQL212 Module 3 Basic syntax: Create [global] temporary table <table-name> <rest of statement as for normal create> Note: SQL Server uses a different syntax. Just put a #in front of the table name as in #mytable. Access doesn’t have true temporary tables.

33. Create Table Bookstore SQL212 Module 3 Example 1: Create a summary table Create table summary( isbn varchar2(20) primary key , How_many int check (how_many >= 0), Constraint isbn_fk Foreign key (isbn) references books(isbn) )

34. Create Summary Table Bookstore SQL212 Module 3

35. Constraints on Summary Table Bookstore SQL212 Module 3

36. Multi-row Insert Bookstore SQL212 Module 3 Basic Syntax: Insert [into] <table-name> Select <select-statement>

37. Multi-row Insert Bookstore SQL212 Module 3 Basic Example: (store # times each book ordered) Insert into summary(isbn, how_many) Select isbn, count(*) From orderlines Group by isbn;

38. Multi-row Insert Bookstore SQL212 Module 3

39. Bookstore SQL212 Module 3 After multi-row insert in MS Access

40. SQL/212 SQL Programming Part 3 – Creating Views and Indexes, Modifying Structures Bookstore SQL212 Module 3

42. Views Bookstore SQL212 Module 3 Basic syntax: Create view <view-name> (<column-list>) As <select statement>

45. Using a View Bookstore SQL212 Module 3

47. Indexes Bookstore SQL212 Module 3 Basic syntax: Create [unique] index <index-name> On <table-name> (field-name> [desc]) Note: can place index on a composite key; ex: state and city

49. Bookstore SQL212 Module 3 After indexing on customer_state

50. State_inx in Oracle Bookstore SQL212 Module 3

52. Modifying a Table Design Bookstore SQL212 Module 3 Basic syntax: Alter <table-name> Add <field-name>, Add <table-constraint>, Modify <field-name> Etc.

53. Modify a Table Design Bookstore SQL212 Module 3 Example: add a phone number field alter table publishers add phone char(12);

54. Bookstore SQL212 Module 3 After alter publishers table

55. SQL/212 SQL Programming Part 4 – Security Bookstore SQL212 Module 3

59. Grant Bookstore SQL212 Module 3 Syntax: Grant <access-right> [with grant option] On <object> to <user> Note: by default only tables owners and admins can access a table. Others must be granted the relevant rights.

61. Grant Bookstore SQL212 Module 3 Example: Give user ddurso the permission to update the employees table. Grant update On employees to ddurso

63. Notes Bookstore SQL212 Module 3

64. Notes Bookstore SQL212 Module 3