Autodesk 24000-000000-9860 - Revit Architecture - PC, User Manual

Page: 1327 / 1646

Table Relationships Within the Database
When Revit Architecture creates database tables during ODBC export, it adds relationships to the data tables
using primary keys and reference values. In relational databases, a primary key is a unique value that identifies
a record (row) in a table of the database. Reference values are columns in a table that refer to other tables.
NOTE Database programs (such as Microsoft
®
Access) can interpret the table relationships. In spreadsheet programs
like Excel, relationships are not supported, so Revit Architecture creates simple, unrelated tables.
The primary key in each element table is the column labeled “Id”. The following table illustrates how primary
keys and reference values create relationships among tables in the database.
Corresponds to... Column (Field) of a Door Instance Table
None. This is the unique identifier for this instance of a door. Id
Id column of the Door Types table Type Id
Id column of the Levels table Level
Id column of the Rooms table Room
Id column of the Key Schedules table Key schedule
The primary key in the Assembly Codes table is the Assembly Code column. The Assembly Code column in
type tables references the Assembly Code column in the Assembly Codes table.
Revit Architecture does not create a reference for the Host Id column because the host may be a wall, floor,
roof, or other such host, so there is no unique table to reference.
The relationships between tables are established only when Revit Architecture first creates the tables; if you
use Revit Architecture to re-export to an existing database, no new relationships are created.
Exporting a View to an Image File
The Export Image command prints any view directly to a raster image file. You can then use this image for
online presentations or printed materials.
To export a view to an image file
1 Click File menu
➤
Export
➤
Image.
2 In the Export Image dialog, click Change to change the default path and file name for the image,
if desired.
3 Under Export Range, indicate the images to export:
■ Current window . This option exports the entire contents of the drawing area, including parts
that are outside the current viewing area.
■ Visible portion of current window . This option exports whatever is currently visible in the
drawing area.
■ Selected views/sheets . This option exports the specified sheets and views. Click Select. In
the View Sheet/Set dialog, select the views and sheets to export, and click OK.
Exporting a View to an Image File | 1289