Data Maintenance Using Tables - Worth Data TriCoder t53 User Manual

The TriCoder uses the 0 (zero) at the end of each record to determine
whether a record in the table has been accessed or not. When a record is
accessed, the 0 (zero) changes to a 1. If the user enters the same data twice,
the TriCoder will look at the table and see a 1 at the end of the matching
data, indicating that the record had been accessed previously. Once
accessed, the table cannot be reset to its original status. You would have to
re-download the table to use the table in its original format.

Data Maintenance using tables

Data maintenance refers to using a table consisting of multiple fields per
record to maintain or update a master file. Tables that are used for
maintenance can consist of up to 4 fields per record, including the "key"
field. The "key" field is the data that is entered while collecting data by
scanning or keying and then looked up in the table by the TriCoder. An
example of this type of application might be a retailer who wants to use the
TriCoder to verify that their shelf prices match the prices in the computer,
or that their inventory counts in the computer match what is actually on the
floor. The retailer can download a table of data into the TriCoder that
consists of the item number (the "key" field), a short description, the price
and finally, the inventory count. He can choose to make any or all of the
fields "updatable" or "fixed".
Fixed fields cannot be changed by the user collecting the data; they are
simply for information purposes only. The "key" field is also fixed as it is
what the TriCoder uses to reference the data in the table.
Updatable fields are fields that the user can change or update in the
TriCoder when they access that particular record in the table. When the
operator scans the item number, the TriCoder looks up the number in the
table and displays the entire record (description, price, quantity), with the
cursor stopped on the first "updatable" field. The operator compares the
data displayed by the TriCoder to the item information on the shelf and
edits the data in the TriCoder if needed. Pressing ENTER takes the
operator to the next "updatable" field and he repeats the process.
Once the record is edited, it is written to a data file for uploading to the host
computer. The table maintenance may only be one step in a multi-statement
program. After the table data is written to file, the TriCoder moves on to
the next program statement.
While collecting data, if the operator wants to display the key field again,
he/she can press the F2 key, and then press it again to return to the rest of
the data items in the table.
When finished, the retailer can now use the edited table information to
update their master records in the computer when he uploads.
12-4