I'm actually developing a synchronization tool in vb.net, I have two database that have on each table records field GUID, this field help to have the same PK on both database. On each record there is also a field called lastUpdated, this field have a milliseconds value, so prevent two user to update the record in the same time. My question is, how I can compare the records of the same table from different db? For example:
ONLINE_DATABASE
TABLE_1
| ID | GUID | NAME | LASTUPDATED |
| 5 | 054ba092-b476-47ed-810b-32868cc95fb| John | 06-01-2016 17:01:12.472438 |
CLIENT_DATABASE
TABLE_1
| ID | GUID | NAME | LASTUPDATED |
| 9 | 054ba092-b476-47ed-810b-32868cc95fb| Jack | 06-01-2016 18:01:12.472438 |
How you can see I've update the record from client application, so I need to apply the same change to online database. Now I've a thousand records to check in about ten tables. So my question is, how I can made a system that do this? Actually I tough to read each row with a MySqlCommand reader but I also think that this procedure is slow... Suggest?
NOTICE THAT: the table have the same name in both db