SamCash
asked on
SQL message table optimization
I have a storage requirement relating to messages. I have 12 fixed length fields, and one large variable length field. I believe the large variable length field's length will grow in the near future, when they decide to include graphics. I have this feeling I should use two linked tables, instead of one, as follows. I m thinking storage size will be reduced and indexing more effective. What is Best Practices?
Kind Regards
Sam
Kind Regards
Sam
CREATE TABLE [dbo].[MessageHead](
[MessageID] [int] NOT NULL,
[Subject] [nvarchar](128) NOT NULL,
[CreateDate] [datetimeoffset](7) NOT NULL,
[CreatedBY] [int] NOT NULL,
[ModifyDate] [datetimeoffset](7) NULL,
[ModifiedBY] [int] NULL,
[ExpireDate] [datetimeoffset](7) NOT NULL,
[DeleteDate] [datetimeoffset](7) NOT NULL,
[Publish] [bit] NOT NULL,
[TextType] [tinyint] NOT NULL,
[DistributionEID] [int] NOT NULL,
CONSTRAINT [PK_MessageHead_1] PRIMARY KEY CLUSTERED
(
[MessageID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[MessageHead] WITH CHECK ADD CONSTRAINT [FK_MessageHead_Contacts] FOREIGN KEY([CreatedBY])
REFERENCES [dbo].[Contacts] ([ContactID])
GO
ALTER TABLE [dbo].[MessageHead] CHECK CONSTRAINT [FK_MessageHead_Contacts]
GO
ALTER TABLE [dbo].[MessageHead] WITH CHECK ADD CONSTRAINT [FK_MessageHead_Contacts1] FOREIGN KEY([ModifiedBY])
REFERENCES [dbo].[Contacts] ([ContactID])
GO
ALTER TABLE [dbo].[MessageHead] CHECK CONSTRAINT [FK_MessageHead_Contacts1]
GO
CREATE TABLE [dbo].[Messages](
[MessageID] [int] NOT NULL,
[Message] [nvarchar](4000) NULL,
CONSTRAINT [PK_Messages] PRIMARY KEY CLUSTERED
(
[MessageID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Messages] WITH CHECK ADD CONSTRAINT [FK_Messages_MessageHead] FOREIGN KEY([MessageID])
REFERENCES [dbo].[MessageHead] ([MessageID])
ON UPDATE CASCADE
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[Messages] CHECK CONSTRAINT [FK_Messages_MessageHead]
GO
ASKER
MlandaT,
Thanks much, I will have to read up on FILESTREAM...
From the users view: These are messages that are posted by various managers at different hierarchical levels and then read by lower levels (filtered) when they login to the website. Analogous to Facebook posts, only currently plain text.
They are already talking RTF, and .DOC, so I put in a "TextType" field to use to determine which control to use to render. So in the future I see them wanting to paste in word doc's. with embedded images.
Potentially? Currently 200,000 per year, they expect double or triple with this added feature. If they successfully sell to other organizations then it would be a direct multiplier. All customers are in the same db.
Thanks Again
Sam
Thanks much, I will have to read up on FILESTREAM...
From the users view: These are messages that are posted by various managers at different hierarchical levels and then read by lower levels (filtered) when they login to the website. Analogous to Facebook posts, only currently plain text.
They are already talking RTF, and .DOC, so I put in a "TextType" field to use to determine which control to use to render. So in the future I see them wanting to paste in word doc's. with embedded images.
Potentially? Currently 200,000 per year, they expect double or triple with this added feature. If they successfully sell to other organizations then it would be a direct multiplier. All customers are in the same db.
Thanks Again
Sam
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ASKER
Thanks much
Sam
Sam
Considering this, should you not rather use a FILESTREAM? Or pointers to files stored outside the database rather? Plain text can be stored as plain text files. How many records are you looking at... Potentially?