CODEWITHSUNDEEP
persist
eyberg
eyberg

Reputation: 3260

What do you do with a one-off piece of data that needs to be persisted?

Recently I've been requested to add on something for the administrator of a site where he can 'feature' something.

For this discussion let's say it's a 'featured article'.

So naturally we already have a database model of 'articles' and it has ~20 columns as it is so I really do not feel like bloating it anymore than it already is.

My options:

  1. Tack on a 'featured' bool (or int) and realize that only one thing will be featured at any given time

  2. Create a new model to hold this and any other feature-creep items that might pop up.

  3. I take your suggestions! ;)

What do you do in this instance? I come across this every now and then and I just hate having to tack on one more column to something. This information DOES need to be persisted.

Upvotes: 0

Views: 156

Answers (5)

ojrac
ojrac

Reputation: 13421

For quick-and-dirty stuff like this, I like to include some sort of Settings table:

CREATE TABLE Settings (
    SettingName NVARCHAR(250) NOT NULL,
    SettingValue NVARCHAR(250)
)

If you need per-user or per-customer settings, instead of global ones, you could add a column to identify it to that specific user/customer. Then, you could just add a row for "FeaturedArticle" and parse the ID from a string. It's not super optimized, but plaintext is very flexible, which sounds like exactly what you need.

Upvotes: 0

Dmitry Ornatsky
Dmitry Ornatsky

Reputation: 2237

Have some kind of global_settings table with a parameter_name and parameter_value columns. Put featured article id here.

Upvotes: 0

DJ.
DJ.

Reputation: 16257

If only one article can be featured at a time it is a waste to add a bool column. You should go up a level and add a column for the FeaturedArticleID. Do you have a Site_Settings table?

Upvotes: 2

Chad Birch
Chad Birch

Reputation: 74598

I'd probably just add a simple two-column table that's basically a key-value store. Then add a new column with values like (featured_article_id, 45) or whatever the first featured ID is.

Edit: as pointed out in the comments by rmeador, it should be noted that this is only a good solution as long as things stay relatively simple. If you need to store more complex data, consider figuring out a more flexible solution.

Upvotes: 3

David M
David M

Reputation: 72920

You could use an extensible model like having a table of attributes, and then a linking table to form a many-to-many relationship between articles and attributes. This way, these sorts of features do not require the schema to be modified.

Upvotes: 0

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