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Tool for Transaction Decomposition Tables (TTDT).
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According to this modeling technique, the entries in row 0 contain
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transaction names. The entries in column 0 contain object class (or
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entity type) names. The other entries contain zero or more action
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names. More about the constraints on TDTs can be found in chapter 7
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of the user's guide and more about the use of this notation technique
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can be found in appendix A of the user's guide.
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Table Editors in General.
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All table editors are very similar. With each table editor you can
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create and manipulate textual tables, i.e. tables in which the cells
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are filled with a multi-line text string.
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When you start up a table editor, or issue the New command in a table
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editor, a new table is created having N x M empty cells (by default,
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N = 7 and M = 7). New rows and columns of empty cells can be created
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with the Add Row and Add Column commands. Selected rows and columns can
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be deleted with the Delete Rows and Delete Columns commands.
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By default, the table is positioned on the drawing area having its
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top-left corner a little right below the top-left corner of the drawing
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area. You can reposition the entire table by means of the four arrow
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buttons in the bottom-left corner of the main window. The page
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boundaries are displayed. If you print the table or save it as plain
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PostScript, the table is positioned on the printed page exactly as it
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is positioned on the drawing area (what you see is what you print).
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Each row and each column has an order number label. These labels are
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used to select an entire row or column or to move an entire row or
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column to a new position. These labels cannot be edited or printed. In
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the View menu there is an option to hide the labels.
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Specific Table editors impose certain constraints on the tables that
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are being edited. These are either immediately enforced (an attempted
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violation is immediately prevented) or soft constraints (the editor
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warns it, after it is asked to check the drawing). The soft constraints
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are checked by the Check Document command in the Document menu.
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lib/help/TTDTIntro
