1z0-591 Questions and Answers

Consistency check is one of the process to check whether a repository is yielding proper results in Answer reports. It checks whether;* All logical columns are mapped correctly to physical columns (B).* All logical dimension tables have a logical key.* There are at least two logical tables in the business model; one is a logical fact table, the other is logical dimension table with join condition.* There are no circular logical join relationships.* A presentation catalog exists for the business model.

An action link is a link to an action that you have embedded in an analysis, dashboard page, scorecard objective, scorecard initiative, or KPI that, when clicked, runs an associated action.

Horizonal Scaleout of System Components

* Used for adding additional managed servers (Java components) and

system components to an existing cluster

* Used for scalability and failover

* Set up via the Universal Installer > Scale Out BI System option

A single query can be performed accessing data from both tables through a join on the columns in the foreign key relation.

Example (see step 4 and 5 below): Getting Top-N Sales Reps for Year and Year-1

1. Under the “Business Model and Mapping” Layer, right click the “F1 Revenue” and select “New Object” -> “Logical Column…”

2. In the “Logical Column” Window give for Name: Year Ago Revenue as seen below:

3. Goto the “Column Source” Tab and select “Derived from existing columns using an expression” radio button then click on the “Edit Expression” icon.

4. Enter the following expression in the “Expression Builder” Window by selecting “Functions” in the “Category:” list, “Time Series Functions” in the “Functions:” list then “Ago” “Time Series Functions:” section.

5. Select the “<>” in the “Ago( )” function, then select “Logical Tables” in the “Category:” list, “F1 Revenue” in the “Logical Tables:” list, then double click the “Revenue” in the “Columns:” list.

Etc.

Decrease query response time which will improve performance for Dashboards and Analysis.

You have three sort of fragmentation:

Fact-based / Dimension-based fragmentation

Content-based / Value-based fragmentation

Level-based fragmentation / aggregate navigation

You can combine the techniques above to construct powerful design that are known as Complex partitioning / fragmentation. When you fragment a dimension, you are automatically in a complex fragmentation.

Object-level security controls the visibility to business logical objects based on a user's role. You can set up object-level security for metadata repository objects, such as subject areas and presentation folders, and for Web objects, such as dashboards and dashboard pages, which are defined in the Presentation Catalog.

1) Business logic object

This controls access to objects, such as:

* subject areas

* presentation tables

* presentation columns

For example, users in a particular department can view only the subject areas that belong to their department.

2) Web object security

This provides security for objects stored in the Web Catalog, such as dashboards, dashboard pages, folders, and reports. You can view only the objects for which you are authorized. For example, a mid-level manager may not be granted access to a dashboard containing summary information for an entire department.

Oracle Business Intelligence Enterprise Edition (OBIEE) Security is managed through:

a) BI Server Security Manager accessed through the BI Server Administration Tool.

* Set permission to business model, tables, columns and subject areas

* Specify filters to limit data accessible by users

* Set authentication options

b) BI Presentation administration accessed through Presentation Web Services.

* Manage Web groups and users

* Set Permissions for Web Catalog items

* Manage privileges and rights given to groups and users

* Control access to dashboards

c) Catalog Manager.

* Set permission for Web Catalog items (Dashboards and Dashboards pages)

Oracle BI Cluster Server Components

* Oracle Business Intelligence Cluster Controller: The Cluster Controller determines which BI Server works in the cluster. It monitors the operation of servers in the cluster. The Cluster Controller is deployed in active-passive mode.

* Clustered BI Servers: The BI Cluster Server feature supports up to 16 BI Servers in a network domain to act as a single server. BI Servers in the cluster share requests from multiple Oracle BI clients.

* Master BI Server: A clustered Oracle Business Intelligence Server is designated as the Master BI Server. The Oracle Business Intelligence Administration Tool connects to the master BI Server for online repository changes.

* Cluster Manager: The Cluster Manager is available in the Administration Tool when a repository is opened in online mode. The Cluster Manager enables Oracle BI Server clustered instances.

Note 1: OBIEE offers two calculation types for measure in the repository:

logical

physical

You can define calculations in either of the following ways:

* Before the aggregation, in the logical table source.

* After the aggregation, in a logical column derived from two other logical columns. For example: sum(col A) * sum(col B)

Note 2: A measure column is a column unlike the baseline column that has a default aggregation rule defined in the Aggregation tab of the Logical Column dialog in the repository.

Measure columns always calculate the aggregation with which they are defined.

Measures need to be defined in a logical fact. Any column with an aggregation rule is a measure.

The value of a static repository value is initialized in the Variable dialog box. This value persists, and does not change until an Oracle BI Administrator decides to change it.