1. Module 2: Creating Data Types and Tables

2. Overview Creating Data Types Creating Tables
Creating Partitioned Tables

3. Lesson 1: Creating Data Types
What Are System-Supplied Data Types?
Using System-Supplied Data Types
What Are Alias Data Types?
Practice: Creating Data Types

4. What Are System-Supplied Data Types?
Category
Data types
Numeric
Integer
int, bigint, smallint, tinyint
Exact
decimal, numeric
Approximate
float, real
Monetary
money, smallmoney
Date and time
datetime, smalldatetime
Character
Non-Unicode
char, varchar, varchar(max), text
Unicode
nchar, nvarchar, nvarchar(max), ntext
Binary
binary, varbinary, varbinary(max)
Image
image
Global identifier
uniqueidentifier
XML
xml
Special
bit, cursor, timestamp, sysname, table, sql_variant

5. Using System-Supplied Data Types
Exact and approximate numeric data types
Exact – decimal, numeric
Approximate – float, real
Character data types
Fixed – nchar
Variable – nvarchar
Date and time data
Dates and times – datetime, smalldatetime
Row version – timestamp
Large data values
Large object type – text, image
max specifier – varchar(max), nvarchar(max), varbinary(max)

6. What Are Alias Data Types?
Based on system-supplied types
Used for common data elements with a specific format
Created by using the CREATE TYPE statement
CREATE TYPE dbo.StateCode
FROM char(2)
NULL

7. Practice: Creating Data Types
In this practice, you will:
Create a data type by using SQL Server Management Studio
Create a data type by using Transact-SQL

8. Lesson 2: Creating Tables
How SQL Server Organizes Data in Rows
How SQL Server Organizes Large Data Values
Considerations for Creating Tables
Generating Transact-SQL Scripts
Practice: Creating Tables

9. How SQL Server Organizes Data in Rows
Header
Fixed Data NB VB
Variable Data
4 Bytes
Null Block
Variable Block
2 Bytes …
2 Bytes
2 Bytes …
Number of columns
More column bits as required
Number of variable-length columns
Additional pointer per variable column
Nullability bit per column (first 8 columns)
Pointer to end of first variable column data

10. How SQL Server Organizes Large Data Values
Large value types out of row option ON
Data row
nvarchar(max) [ < 8K]
nvarchar(max) [ > 8K]
Large value types out of row option OFF
nvarchar(max) [ < 8K]
nvarchar(max) [ > 8K]
Data row

11. Considerations for Creating Tables
Column collation
Column nullability
Special column types
Computed columns
Identity columns
timestamp columns
uniqueidentifier columns
CREATE TABLE Sales.CustomerOrders
(OrderID int IDENTITY NOT NULL,
OrderDate datetime NOT NULL,
CustomerID int NOT NULL,
Notes nvarchar(200) NULL)

12. Generating Transact-SQL Scripts
Object Explorer
Connect to a SQL Server Database Engine instance
Expand Object Explorer and locate the object
Right-click and then click Script <object type> as 1 2 3
Generate Scripts Wizard
Right-click a database, point to Tasks, and then click Generate Scripts
Follow the steps in the wizard 1 2

13. Practice: Creating Tables
In this practice, you will:
Create a table by using SQL Server Management Studio
Create a table by using Transact-SQL
Generate a Transact-SQL script

14. Lesson 3: Creating Partitioned Tables
What Are Partitioned Tables?
What Are Partition Functions?
What Is a Partition Scheme?
Demonstration: Creating a Partitioned Table
What Operations Can Be Performed on Partitioned Data?

15. What Are Partitioned Tables?
Data is partitioned horizontally by range
< 2003
> 2005
Sales.Orders

16. What Are Partition Functions?
Partition functions define partition boundaries
Boundary values can be assigned to LEFT or RIGHT
< 2003
> 2005
CREATE PARTITION FUNCTION pf_OrderDate (datetime)
AS RANGE RIGHT
FOR VALUES ('01/01/2003', '01/01/2004', 01/01/2005')

17. What Is a Partition Scheme?
A partition scheme assigns partitions to filegroups
The “next” filegroup can also be defined
< 2003
> 2005
CREATE PARTITION SCHEME ps_OrderDate
AS PARTITION pf_OrderDate
TO (fg1, fg2, fg3, fg4, fg5)

18. Demonstration: Creating a Partitioned Table
In this demonstration, you will see how to:
Create a partition function
Create a partition scheme
Create a partitioned table
View partitioned table behavior

19. What Operations Can Be Performed on Partitioned Data?
SWITCH: Swap a populated table or partition with an empty table or partition
MERGE: Combine two adjacent partitions into a single partition
SPLIT: Insert a boundary in an existing partition to create a new partition
SWITCH
SPLIT
< 2003
> 2006
MERGE

20. Lab: Creating Data Types and Tables
Exercise 1: Creating Data Types
Exercise 2: Creating Tables
Exercise 3: Creating Partitioned Tables