Comparisons To Microsoft Access
SDA is used to build display formats which are similar to the Microsoft Access convention of forms. Other similarities in nomenclature are as follows:
- Input, Output, and I/O fields are similar to text boxes.
- Constant fields are similar to labels.
- Field characteristics (non-display, highlighted, underlined, blinking, column separators) are similar to properties that would be found on an object's property sheet. Properties can be changed on-the-fly just as indicators conditioning field characteristics can be changed.
Important differences between Access forms and SDA display formats include:
- Bound and unbound fields - SDA fields are always unbound.
- SDA does not incorporate a record source, although a field can contain a Message Indentifer Code of the form Mx9999 to access the Member1 or Member2 message member.
- Display formats, fields, and characteristics cannot be changed during program execution.
Read more about this topic: IBM System/34 And System/36 Screen Design Aid
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