Linking lets you connect to data in another database without importing it, so that you can view and modify the latest data in both the source and destination databases without creating and maintaining two copies of the same data.You can link only to tables in another Access database.You can bring data from one Access database into another in many ways.Copying and pasting is the simplest method, but importing and linking offer you better control and flexibility over the data that you bring, and over how you bring that data into the destination database.In other words, you cannot make changes to a linked table such as adding or deleting a field, or modifying the data type of a field.Objective : Objective of this post is to demonstrate, how we can update value/data in one table with the data from another table.
This blog post illustrates how to update more than one column in a table with values from columns in another table and explains how to do it in the three RDBMS that we support.Any changes you make to the data in the source database are reflected in the linked table in the destination database, and vice versa.However, you cannot change the structure of a linked table in the destination database.Table Structures and values: Table A has four columns: a, b, c, d (a is the primary key column) Table B has five columns: a1, b1, c1, d1, e1 (a1 and b1 together constitute the primary key for this table) The foreign key relationship between the two tables is based on A.a = B.a1 The data in these 2 tables is as follows: I. Table B a1 b1 c1 d1 e1 1 x1 y1 z1 40 2 a1 b1 c1 50 The requirement is to write a SQL to update columns b, c and d in Table A from the columns b1, c1 and d1 from Table B where-ever the join condition satisfies and e1 40) / Results after the update: a b c d ———————————— 1 x y z 2 a1 b1 c1 3 t x z SQL Server: UPDATE TABLEA SET b = TABLEB.b1, c = TABLEB.c1, d = TABLEB.d1 FROM TABLEA, TABLEB WHERE TABLEA.a = TABLEB.a1 AND TABLEB.e1 40 GO Note: This is an extension in SQL Server i.e.the FROM clause – it does make it simple to understand and is a nice feature.You might want to copy the entire table or just the table definitions to avoid manually designing each of these tables.When you choose to import only the table definition, you get an empty table.This article explains how to import or link to data in another Access database.When you import from another database, Access creates a copy of the data in the destination database without altering the source.Actually I am trying to update the Bot table MFG with the Big table MFG when Big. In this example, we've selected the Big and Bot tables. When the Show Table window appears, select the tables that you wish to use in the query and click on the Add button.