A. Object Linking and Embedding OLE
Object Linking and Embedding (OLE) is a technology developed by Microsoft that allows embedding and linking to documents and other objects.
OLE allows an editing application to export part of a document to another editing application and then import it with additional content. For example, a spreadsheet created in Excel can be imported into Word. if the spreadsheet then needs to be amended, it can be edited in Excel and the changes will appear in Word.
A Linked object is where the original remains stored in the source file.
An embedded object is part of the destination file and this object is not automatically updated when the source file changes. However, this embedded file can still be edited in its source application.
B. Portability of Data
People, who have different types of computers with different operating systems and applications, often need to transfer files and programs among their computers.
However, portability may not be possible because:
· A document created using one word processing package may not be readable by another WP package, even on the same computer. Therefore. must Wps allow the user to save the file as text only.
· A document created in Word may appear different on another computer that also has Word, because the printer and printer settings may be diffrent.
· If two computers do not share the same fonts, text may appear differently because fonts will be substituted.
C. Upgradability
Software upgrades can provide new and useful features but they can also cause problems, such as:
· documents may not be compatible between versions e.g. a Word 6 file can be read in Word 97 but a word 97 file cannot be read in Word 6.
· data formatting may be lost if a Word 97 document is saved yo Word 6 format because Word 97 contains new features that the Word 6 does not have.
· upgraded software frequently requires more memory, more disk space and a faster processor, so