ERD in Visio - Need Shapes
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If you decide not to have the drawing created automatically, you can drag the items from the Tables and Views window onto your drawing page to manually assemble the database model.
Review your selections to verify that you are extracting the information that you want, and then click Finish. The wizard extracts the selected information and displays notes about the extraction process in the Output window. This ability is limited to only VisioModeler 2. On the Database tab, in the Model group, click Import, and then click the model type. 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.
In the Import dialog box, click OK. Visio imports the file and displays its progress in the Output window. The imported tables are displayed in the Tables and Views window.
In the Tables and Views window, select the tables that you want to model, and then drag them onto the drawing page.
Business Process Model and Notation | Revolvy
After you create a database model diagram, the work of refining the diagram begins. You can add and customize tables and views, create relationships, and customize columns and data types. Tables 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.
Double-click the shape to open the Database Properties window. 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 Req'd check box for columns that can't have null values. Select the PK primary key check box for columns that uniquely identify each row in the database table. Columns Use the Database Properties window to add or change properties for columns, including data types and primary keys.
Double-click the table in your diagram. In the Database Properties window, under Categories, click Columns. Click in the first empty Physical Name cell, and type a name.
Business Process Model and Notation
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 prevent null values, select the Req'd check box.
To specify that the column is a primary key, select the PK check box. 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 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. Create a relationship between tables: 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.
Double-click the table that you want for the primary key side of the relationship. 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.
Connect the higher end to the table with the parent table. Connect the other end to the child table. 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.
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. Set the relationship's cardinality: 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 you can do the following: Create indexes Indexes improve the performance, or speed, of your database when you run a query.
Open the database model diagram. 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. The database model diagram is updated. Create views 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.
Set extended properties for tables and views Depending on your database management system DBMSyou 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. Create check clauses Use check clauses to ensure that the data that is entered into a column is within a particular range of values. Has its own self-contained start and end events; sequence flows from the parent process must not cross the boundary.
Transaction A form of sub-process in which all contained activities must be treated as a whole; i. Transactions are differentiated from expanded sub-processes by being surrounded by a double border.
Call Activity A point in the process where a global process or a global Task is reused. A call activity is differentiated from other activity types by a bolded border around the activity area. Gateway A gateway is represented with a diamond shape and determines forking and merging of paths, depending on the conditions expressed. Exclusive Used to create alternative flows in a process. Because only one of the paths can be taken, it is called exclusive.
Event Based The condition determining the path of a process is based on an evaluated event. Parallel Used to create parallel paths without evaluating any conditions. Inclusive Used to create alternative flows where all paths are evaluated.
Exclusive Event Based An event is being evaluated to determine which of mutually exclusive paths will be taken. Complex Used to model complex synchronization behavior. Parallel Event Based Two parallel processes are started based on an event, but there is no evaluation of the event.
Connections Flow objects are connected to each other using Connecting objects, which are of three types: Sequence Flow A Sequence Flow is represented with a solid line and arrowhead, and shows in which order the activities are performed.
The sequence flow may also have a symbol at its start, a small diamond indicates one of a number of conditional flows from an activity, while a diagonal slash indicates the default flow from a decision or activity with conditional flows. Message Flow A Message Flow is represented with a dashed line, an open circle at the start, and an open arrowhead at the end. It tells us what messages flow across organizational boundaries i.
A message flow can never be used to connect activities or events within the same pool. Association An Association is represented with a dotted line. It is used to associate an Artifact or text to a Flow Object, and can indicate some directionality using an open arrowhead toward the artifact to represent a result, from the artifact to represent an input, and both to indicate it is read and updated.