# Model page

This page shows the contents of a sdai model. The name of model, repository to which it belongs to, underlying schema name, change date, modified flag and current access are given in upper part of page. Change date is automatically changing when you edit this model. Modified flag shows is model at current time modified (if it is selected) or not. Also By two access radio buttons r/o (read only) and r/w (read write) you can see current access to this model. Also you can change access by selecting one of them, but remember that access changes automatically when you trying to edit data. There are three sub tabs: Extents, Schema Instances and Mapping. The Extents and Mapping tabs are the same as in schema instance page, but data are taken just from this one model.

## Extents

The contents of all associated models together are shown here. At the top is filtering line where you can filter the table below. 'Populated' will showall the all entity data types which have more than zero entity data type values(column '#values'). 'All folders' will show all entity data types. And 'Exactfolders' filter just these entity data types which have an instance (column'instances').

### Table

Table have four columns: Name, Schema, # values and # instances. Name column contains names of entity data types (name of entity definition ). Schema columncontains schema name of of entity data type. # values column shows how muchentity data type values are for this entity data type and # instances showshow mush instances have this entity data type. If there is an empty cell insteadof number in '# values' column this means that such entity data type valuecan not exist (entity data type is complex). If there is an empty cell insteadof number in '# instances' column this means that such instance can not exist(entity data type is abstract).
At the end the total number of entity data types, complex entity data types and instances are shown.

## Schema Instances

All schema instance names to which this model belongs to are listed here. This is just information page. It is not possible to add model to schemes here. If you want to do so you need go to schema instance page and add this model here.

## Mapping

Here are listed all AIM data in ARM context (All ARM entity data types). If there is no ARM schema for this underlying schema, than 'No mapping data' will appear instead of table. At the top are two filtering radio buttons. First one 'Populated folders' will list these ARM entity data types which haveany available AIM instance. And second one 'All folders' lists all available ARM entity data types.

### Table

Table consists of three columns: 'Source (ARM)', 'Target (AIM)' and '#'. Infirst column are presented ARM entity data type names. In second are AIM entity data type names. It is need to remember that one ARM entity data types canbe mapped to several AIM entity data types. So there is relation many to many.Third column show count of instances which is available for this pair ARM andAIM entity data types.