Access 2016 updating between two tables
Isn't it easier to work with one large table instead of two or three medium-sized ones?
Customer Sales is a linked table (the source table - data came from this table).update Customer Sales_Retail as a inner join ( select x. Sales Date from Customer Sales as x inner join Customer Sales_Retail as y on x. Uniqueness prohibits duplicated values in the column(s).Secondly, if the source table is a linked table, we can resort to a two-step process.Table 3.1 outlines a structure of a simple table (named Leads) that stores data on sales leads.This structure works fine until you need to add two or more leads from the same company (a not-uncommon occurrence).This chapter tackles both challenges and shows you how to exploit the full multiple-table powers of Access.
Why do you need to worry about multiple tables, anyway?
Although most of these tables have nothing to do with each other (for example, tables of customer information and employee payroll data), it's likely that at least some of the tables do contain related information (such as tables of customer information and customer orders).
Working with multiple, related tables in a query presents you with two challenges: You need to design your database so that the related data is accessible, and you need to set up links between the tables so that the related information can be retrieved and worked with quickly and easily in the query design window.
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Most database applications store their information in multiple tables.
Being able to query and work with data from multiple tables requires some front-end planning to set up the tables correctly, and this chapter from Paul Mc Fedries helps you to design databases to make such queries possible.