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What is a best practice when using the delete statement?
One final good practice to use when deleting data from a database is to always wrap your DELETE statement in a BEGIN TRAN – COMMIT/ROLLBACK TRAN code block. With the method outlined below you can run the BEGIN TRAN and your DELETE, then verify how many records were affected before you COMMIT your changes.
Is Soft Delete good practice?
If you’re going to use soft deletion, it’s a good idea to have a deleted_date field, instead of an is_deleted field. You get a nice piece of extra data instead of just the bit field.
Why we use soft delete?
Soft deletion is a widely used pattern applied for business applications. It allows you to mark some records as deleted without actual erasure from the database. Effectively, you prevent a soft-deleted record from being selected, meanwhile, all old records can still refer to it.
What does soft delete do?
“Soft delete” in database lingo means that you set a flag on an existing table which indicates that a record has been deleted, instead of actually deleting the record.
Can a database be deleted?
System databases cannot be deleted.
Is it possible to delete rows with a natural key?
It can make it impossible to use a natural key. You may have one or more deleted rows with the natural key and a real row wanting to use that same natural key. There may be legal/compliance reasons why you are meant to actually delete data. WW. WW. As a complement to all posts…
How is a horizontal line delete Mark made?
Copy Editing Marks. A horizontal line delete mark is made through a phrase, sentence, or paragraph. A vertical line delete mark is made through a single letter or mark of punctuation. The letter or punctuation to be deleted may also be circled with the delete mark.
When is a row considered to be deleted?
A row is considered as deleted if the IsDeleted flag is set. Ayende considers this approach as “simple, easy to understand, quick to implement and explain” but “quite often, wrong”. The problem is: that deletion of a row or an entity is rarely a simple event.
Which is the correct way to delete data from a table?
The advocates of soft delete operations suggest adding an IsDeleted column to the table leaving the data intact. A row is considered as deleted if the IsDeleted flag is set. Ayende considers this approach as “simple, easy to understand, quick to implement and explain” but “quite often, wrong”.