Warning: strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 35
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 107
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 109
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 111
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 112
Feb
Warning: strtotime() [function.strtotime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 35
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 107
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 109
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 111
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /home/frodr/public_html/msofficetuneup.com/wp-includes/functions.php on line 112
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Relationships aren’t just useful for catching mistakes. Relationships also make it easier for you to browse through related data. In Chapter 6, you’ll learn to create search routines that pull together information from related tables (Section 6.3). But even without this technique, Access provides some serious relationship mojo in the datasheet.
Here’s how it works. If you’re looking at a parent table in the datasheet, then you can find the related child records for any parent record by clicking the plus box that’s just at the left of the row (Figure 5-7).
This drops a subdatasheet into view, which shows just the related records (Figure 5-8). You can use the subdatasheet to edit the doll records here in exactly the same way as you would in the full Dolls datasheet. You can even add new records.
Note: You can open as many subdatasheets as you want at the same time. The only limitation is that the records in a subdatasheet don’t show up if you print the datasheet (Section 3.3).
A parent table may be related to more than one child table. In this case, Access gives you a choice of what table you want to use when you click the plus box. Imagine you’ve created a Customers table that’s linked to a child table of customer orders (Orders), and a child table of billing information (Invoices). When you click the plus box, Access doesn’t know which table to choose, so it asks you (see Figure 5-9).
Figure 5-7. Curious to find out what dolls you have from MagicPlastic? Just click the plus box (circled).
Figure 5-8. The subdatasheet’s really a filtered version of the ordinary Dolls datasheet. It shows only the records that are linked to the manufacturer you chose. The subdatasheet has all the same view settings (like font, colors, column order) as the datasheet for the related table.
Note: You have to choose the subdatasheet you want to use only once. Access remembers your setting and always uses the same subdatasheet from that point on.
Figure 5-9. When Access doesn’t know which table to use as a subdatasheet, it lets you pick from a list of all your tables. In this case, only two choices make sense. Choose Orders to see the customer’s orders, or Invoices to see the customer’s invoices. When you select the appropriate table in the list, Access automatically fills in the linked fields in the boxes at the bottom of the window. You can then click OK to continue.
As you create more elaborate databases, you’ll find that your tables are linked together in a chain of relationships. One parent table might be linked to a child table, which is itself the parent of another table, and so on. This complexity doesn’t faze Accessit lets you drill down through all the relationships (see Figure 5-10).
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