Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. Didn't match my screen. Incorrect instructions. Too technical. Not enough information. Not enough pictures. Any additional feedback? In the Database Properties window, under Categories , click Miscellaneous.
Under Cardinality choose the cardinality that fits the relationship best. For one-to-many relationships that would be either Zero or more or One or more. For one-to-one relationships that would be either Zero or one or Exactly one. On the Database menu, point to Options , and then click Document. On the Relationships tab, check information you want to show on the diagram. It is most likely that your edition of Visio doesn't include the features you are looking for.
The name of the edition is in the top line of text in the dialog box. Visio Professional and Premium editions support the reverse engineering features for the Database Model Diagram template that is, using an existing database to create a model in Visio but it does not support forward engineering that is, using a Visio database model to generate SQL code.
Note: You can find the full suite of database modeling features, including both reverse engineering and forward engineering, in Visio for Enterprise Architects. If you are using Visio Plan 2 and want to learn about how to engineer an existing database into a database model, see the topic, Reverse engineer an existing database. Need more help? Expand your skills. Get new features first. Was this information helpful? Yes No.
Thank you! In the Database Document Options dialog box, select the symbol set that you want to use and other table and relationship options, and then click OK.
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, you can use the Reverse Engineer Wizard to extract the schema, or structure, of the database and build a new model. These ranges are treated like tables in the wizard. On the Database tab of the ribbon, in the Model group, select Reverse Engineer. For example, in the Connect Data Source dialog box, type a user name and password, and then click OK.
If your data source is not password protected, just click OK. In most cases, this is not a problem—just click OK and continue with the wizard. Note: If you are reverse engineering an Excel worksheet and don't see anything in this list, it is likely that you need to name the range of cells that contains the column headings in your worksheet.
If you selected the Stored Procedures check box in step 5, select the procedures that you want to extract, or click Select All to extract them all, and then click Next. On the Database tab of the ribbon, in the Model group, select Import , and then select the file type you want to import from. Type the path and file name for the model that you want to import, or click the Browse button to locate the model file, and then click Open.
On the Database menu, point to Options , and then select Document. On the Database menu, click Reverse Engineer to open the wizard. After you create a database model diagram, the work of refining the diagram begins. You can add and customize the three main components of a model:.
Relationships the associations between tables. Relationships can be one-to-one, one-to-many, or many-to-many. Select a heading below to open instructions about adding the feature to your model. There are two stencils that come with the Database Model Diagram template. As you begin to refine the structure of your diagram, work from the stencil that's right for you:.
Use the Entity Relationship stencil to model databases that are based on the SQL92 and earlier standards. Use the Object Relational stencil , which has additional shapes for working with types, to model databases that are based on SQL99 and later standards.
Use the Entity shape to create a table in your diagram:. From either the Entity Relationship or Object Relational stencil, drag an Entity shape onto the drawing. Under Categories , click Definition and type a name for the table. Under Categories , click Columns , type a name, and choose a data type.
Select the PK primary key check box for columns that uniquely identify each row in the database table. Use the Database Properties window to add or change properties for columns, including data types and primary keys:.
In the Database Properties window, under Categories , click Columns. To change the data type for a column, click the column's Data Type field, and then select a data type from the list or type it into the list. For example, you can type decimal 8,2 or char To see more column properties in addition to those that appear when you click the Columns category, select the column and then click Edit.
Relationships use primary and foreign keys to allow databases to match a row in one table with a row in a related table. You can show those relationships in your diagram. In addition, you can set their cardinality for example, one-to-many and use either Crow's feet, Relational, or IDEF1X notation to show the cardinality.
You can't show many-to-many relationships with any of these notations in the Database Model Diagram template. Make sure that both tables are visible in the diagram. If you reverse engineered the model from an existing database, you may need to drag one or both from the Tables and Views window onto the drawing page. In the grid, click the column that you want to use to uniquely identify each row in the table, and select the PK check box to set it as the primary key. From the Object Relational or Entity Relationship stencil, drag a Relationship shape and drop it onto a blank space on the page.
If the second table doesn't already contain a column with the same name as the primary key, the modeler adds it to the second table as a foreign key. Note: If relationship lines disappear, on the Database tab, in the Manage group, click Display Options. On the Relationships tab, under Show , select the Relationships check box.
In the Database Properties window, under Categories , click Miscellaneous. Under Cardinality , choose the cardinality that best fits the relationship. For one-to-many relationships, the best choice is either Zero or more or One or more.
For one-to-one relationships, the best choice is either Zero or one or Exactly one. To make other refinements to your diagram such as creating indexes, check clauses, and triggers , select a heading below to open instructions about adding doing any of the following:. Double-click the table to which you want to add an index, and in the Database Properties window, in the Categories list, click Indexes. In the Create Index dialog box, type a name for the index, and then click OK.
In the Index Type list, select an option to create a unique or non-unique index. In the Indexed Columns list, select the Asc check box to create an index that has an ascending sort order, or clear the check box to create an index that has a descending sort order. You can think of a view as a saved query. Views are particularly handy if you need to repeatedly access the same information from multiple tables, or if you want to expose the data to users without letting them change the actual tables.
Depending on your database management system DBMS , you may be able to set extended properties for tables or views to determine where they are stored. Double-click the table or view whose extended properties you want to set, and in the Database Properties window, in the Categories list, click Extended. Use check clauses to ensure that the data that is entered into a column is within a particular range of values.
For example, you can create a check clause that requires the data in a column called "Age" to be over Under Categories , click Columns and then click the column that you want to add a check clause to.
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