Updating ms access table
To maintain data integrity, the fields in an Access database are set to accept a specific type of data, such as text or numbers.
If you don't enter the correct data type, Access displays an error message.
Here are the steps to create an update query that updates values across tables: database.
Note that most of the purchase prices are null (see Figure 1-15).
You’ve imported a table that contains updated prices for some of the records in a table in your database.
The data in all the other fields in the existing table is still correct.
There are several ways to update data in an Access database.
The trick is to join the two tables using a common field and to properly specify the name of the field from the source table in the Update To cell.
Update queries are the most efficient way to make bulk changes to data; they are much more efficient than using a recordset in a VBA procedure.
A Microsoft Access Update Query updates specified values in a table for all records or for those records that match a specified criteria.
Note: Due to the permanent effects of working with an update action query, you should always make a backup copy of your tables, or your database before attempting this option.
Now consider the following scenario example, that will illustrate the use of a Microsoft Access Update query: One of your product suppliers has decided to increase the price of their products by 3 percent (%) across the board.