如何获取Access数据库中已更改的记录详细信息

Question

我有一个包含许多表和数千条记录的Access数据库，如果有人更改其中的任何数据，任何行，甚至只有一个单元格，是否有任何方法可以了解哪些特定的行或单元格已被更改Access数据库，任何属性还是应该使用任何触发器？

Answer 1

I had a similar problem a couple of years back with an MSSQL DB and I seem to recall that both ACCESS (MDB) and SQL (MDF) Databases DON't inherantly support this. You, if I am not mistaken, will have to adopt the principles:

1) Transactional Data should NEVER be adited, only reference historical records with new records containing the changed values. I took it from three angles :

• I had a column called PrecursorRecId which held the record_id of the most recent record the update related to.
• Another column held and Context_ID under which all related records were linked by a common value which was the key Id column of AuditTxnContext table.
• Record's TxnDate (pretty logical)

2) Master Data records Also were not altered but each record had an EffectiveFromDate and and EffectiveToDate where the records with a NULL EffectiveToDate were considered current. Depending on the sensiitivity of the table, creation of MaterData records was accompanied by Audit Entry records. Again, there is a RecordCreatedDateTime which does not automatically match the EffectiveFromDate stamp.

This may help you going forward but there's not much to assist with your existing data. I also don't have much idea of what it is you are working on so my input is fairly generic. I hope it helps any way. I would welcome anyone's input if I am in error, this is just how we approached our challenge.

Tell me a bit more if you are still dealing with it. If not, maybe close your question.

Cheers

Mac