This is a script function I've been using for years.
CREATE FUNCTION [dbo].[fSplit]
(
@List VARCHAR(6000),
@SplitOn VARCHAR(5)
)
RETURNS @RtnValue TABLE
(
ID INT identity(1,1),
Value VARCHAR(100)
)
AS
BEGIN
WHILE (Charindex(@SplitOn,@List)>0)
BEGIN
INSERT INTO
@RtnValue (value)
SELECT
Value = ltrim(rtrim(Substring(@List,1,Charindex(@SplitOn,@List)-1)))
SET @List = Substring(@List,Charindex(@SplitOn,@List)+len(@SplitOn),len(@List))
END
INSERT INTO
@RtnValue (Value)
SELECT
Value = ltrim(rtrim(@List))
RETURN
END 
For most DBAs, normalization is an understood concept, a bread and butter bit of knowledge. However, it is not at all unusual to review a database design by a development group for an OLTP (OnLine Transaction Processing) environment and find that the schema chosen is anything but properly normalized. This article by Brian Kelley will give you the core knowledge to data model.
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