Business Objects Interview questions and Answers for Freshers - 3

Question: 11

What are strategies?

A strategy is a script that automatically extracts structural information from a database or flat file.

Question: 12

What are the different types of Strategies

In Designer we can specify two types of strategies:

Built-in strategies and

External strategies

Built-in Strategies: Designer provides a number of default strategies which we can use. These are strategies for extracting joins, detecting cardinalities, and creating default classes and objects. Options for indicating default strategies are located in the Database tab of the Options dialog box.

External Strategies: We can also create our own strategies. Such strategies are referred to as external strategies. With an external strategy, we can specify the exact way that objects and joins are to be extracted from the database structure. The strategy we use, for example, can be a script generated from a CASE Access tool. An external strategy is specific to one RDBMS.

Question: 13

What are linked universes?

Linked universes are universes that share common components such as parameters, classes, objects, or joins. Among linked universes, one universe is said to be the kernel or master universe while the others are the derived universes.

A kernel or master universe represents a re-usable library of components. Derived universes may contain some or all the components of the kernel or master universe, in addition to any components that have been added to it.

Approaches to linking universes

You can use one of three approaches when linking universes:

The kernel approach

The master approach

The component approach

The Benefits of Linked Universes

You can link the active universe to a kernel universe, only if the following requirements are met:

The kernel universe and active universe were created from the same data account and the same RDBMS.

The kernel universe was exported and re-imported at least once.

Exported derived universes are located in the same universe domain as the kernel universe.

All classes and objects are unique in both the kernel universe and the derived universes. (Otherwise, collisions may occur.)

You are authorized to link the given universe.

Question: 14

What is a Data Provider?

The data source (Query) is called as the data provider.

Question: 15

Did you do metadata reporting in BO?

Metadata reporting of BO is possible. BO provides a separate universe which actually contains repository tables, objects etc.

Using this Universe one can do metadata reporting in BO.