![]() ![]() As you begin to refine the structure of your diagram, work from the stencil that's right for you: There are two stencils that come with the Database Model Diagram template. Select a heading below to open instructions about adding the feature to your model. Relationships can be one-to-one, one-to-many, or many-to-many. Relationships (the associations between tables). You can add and customize the three main components of a model:Ĭolumns (which describe facts about a table), and In the Tables and Views window, select the tables that you want to model, and then drag them onto the drawing page.Īfter you create a database model diagram, the work of refining the diagram begins. The imported tables are displayed in the Tables and Views window. Visio imports the file and displays its progress in the Output window. Type the path and file name for the model that you want to import, or select the Browse button to locate the model file, and then select Open. On the Database tab, in the Model group, select Import, and then select the model type. The Reverse Engineer Wizard opens automatically. This ability is limited to only VisioModeler 2.0 or later dictionary model (.imd) files and PLATINUM ERwin 2.6, 3.0, and 3.52. If you have an existing VisioModeler or PLATINUM ERwin model, you may be able to import it to create a Visio database model diagram. If you have not already associated the Visio database driver with a particular ODBC data source, click Setup. Select the database driver for your database management system (DBMS). On the first screen of the Reverse Engineer Wizard, do the following: If the wizard doesn't open: On the Database tab of the toolbar ribbon, in the Model group, select Reverse Engineer. The Reverse Engineer Wizard should open automatically. In the search results, double-click Database Model Diagram. In the Search box, enter database model and press Enter. This step ensures that the wizard maps the native data types correctly and that all the code that is extracted by the wizard is correctly displayed in the Code window. For more information about how to name a range of cells, see Define and use names in formulas.įor best results, set your default driver to the target database that you want to reverse engineer before you run the Reverse Engineer Wizard. These ranges are treated like tables in the Reverse Engineer Wizard. If you want to use more than one worksheet, just name the group of column cells in each worksheet. ![]() If you're going to reverse-engineer an Excel workbook, first open the workbook and name the group (or range) of cells that contains the column headings. Gonna miss that a whole lot.If you have a database that you want to model so that you can understand it better or use it as a starting place for a new model, use the Reverse Engineer Wizard to extract the schema, or structure, of the database and build a new model. The one thing that I am going to miss (and the product doesn't seem to have a way to do it) is to be able to start a new diagram with just one table and then tell it to add tables to the diagram than have relationships with that one table, like SQL Diagrams did. I really liked the simplicity of "SQL Diagrams" but I have to admit that ApexSQL Model is simple as simple to use and has a whole lot more power without the danger of accidentally changing the underlying database for "What If" diagrams. And, I have it working on old Windows 7 and it very nicely reversed engineered Adventureworks 2008. And it's super easy and nearly instantaneous to switch between "Tree" and "Hierarchical" to study relationships. So far, I like the "Tree" layout the best but they have 5 others depending on what you're used to and they have 4 different "Edge routing" selections (I like "Polyline" the best, so far). Still, for a free product that does so much, I'm not going to complain. I've only been playing with it against the Adventure works database for about an hour but I'm impressed with what it does and really like, for example, that it identifies AKs as well as making a line difference between "Identifying" and "Non-Identifying" relationships although I'd have preferred it if they had simply used different colored solid lines instead of dashed lines for "Non-Identifying" relationships. I also have to say I can't believe they offer this product for free. If they had used Black lines on the White background, things would have been great for me but the Blue lines that they use and the font colors are just a little pale on the White background and so, for this particular product, I have to admit the "Dark" background is easier to read. First of all, the "Light" and "Blue" display options DO have a nice White background. I went to the link posted and they didn't ask for a whole lot (just Name and email address) and so I took a shot at it. ![]()
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