a2zinterviews

53.	What are the types of connections or types of universe?
	Designer provides three types of connections: secured, shared, and personal. Personal: Universe can be accessed by a single user or A single user can query the data from database. Sharing: multiple user can send queries to database. Secure: This is the default connection type. A universe can be accessed by multiple users and can send multiple queries to the database.
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54.	What is List of Values (LOV)?
	A list of values contains the data values associated with an object. These data values can originate from a corporate database, or a flat file such as a text file or Excel file. In Designer you create a list of values by running a query from the Query Panel. You can then view, edit, purge, refresh, and even export this file. A list of values is stored as an .lov file in a subfolder of the UserDocs folder.
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55.	What is restriction?
	A restriction is a condition which reduces the number of records displayed in the record.
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56.	What is a Chasm trap?
	Many to one joins from two fact tables converge on a single lookup table. This type of join convergence is called a Chasm trap.
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