In the shortcut menu, select Update Row Count. Click Yes to check out the objects.

7-44 Metadata Repository Builders Guide for Oracle Business Intelligence Enterprise Edition 1. In the Physical layer of the Administration Tool, right-click a single table or column. You can select multiple objects and then right-click.

2. In the shortcut menu, select Update Row Count.

To update all row counts in the Physical layer: 1. In the Administration Tool, select Tools, then select Update All Row Counts. If the repository is open in online mode, the Check Out Objects window might open.

2. Click Yes to check out the objects.

Any row counts that have changed since the last update are refreshed. 8 Working with Logical Tables, Joins, and Columns 8-1 8 Working with Logical Tables, Joins, and Columns The Business Model and Mapping layer of the Oracle BI repository defines the business, or logical, model of the data and specifies the mapping between the business model and the Physical layer schemas. Business models are always dimensional, unlike objects in the Physical layer, which reflect the organization of the data sources. The Business Model and Mapping layer can contain one or more business models. Each business model contains logical tables, columns, and joins. Even though similar terminology is used for logical table and physical table objects, such as the concept of keys, logical tables and joins in the Business Model and Mapping layer have their own set of rules that differ from those of relational models. For example, logical fact tables are not required to have keys, and logical joins can represent many possible physical joins. Logical tables, joins, mappings, and other objects in the Business Model and Mapping layer are typically created automatically when you drag and drop objects from the Physical layer to a particular business model. After these objects have been created, you can perform tasks like creating additional logical joins, performing calculations and transformations on columns, and adding and removing keys from dimension and fact tables. This chapter contains the following sections: ■ Creating the Business Model and Mapping Layer ■ Working with the Business Model Diagram ■ Creating and Managing Logical Tables ■ Defining Logical Joins ■ Creating and Managing Logical Columns ■ Enabling Write Back On Columns ■ Setting Up Display Folders in the Business Model and Mapping Layer ■ Modeling Bridge Tables Creating the Business Model and Mapping Layer After creating all of the elements of the Physical layer, you can drag tables or columns from the Physical layer to a business model in the Business Model and Mapping layer to create logical objects in the metadata. This section contains the following topics: 8-2 Metadata Repository Builders Guide for Oracle Business Intelligence Enterprise Edition ■ Creating Business Models ■ Automatically Creating Business Model Objects ■ Duplicating a Business Model and Subject Area Creating Business Models The Business Model and Mapping layer of the Administration Tool can contain one or more business models. A business model contains the business model definitions and the mappings from logical to physical tables for the business model. When you work in a repository in offline mode, remember to save your repository from time to time. You can save a repository in offline mode even though the business models may be inconsistent. To create a business model: 1. In the Administration Tool, right-click in the Business Model and Mapping layer below any existing objects.

2. Select the option New Business Model from the shortcut menu.