October 12, 2018

Sreekanth B

MuleSoft Most Frequently Asked Latest SSAS Interview Questions Answers

What Is A Cube?

The basic unit of storage and analysis in Analysis Services is the cube. A cube is a collection of data that’s been aggregated to allow queries to return data quickly.

For example, a cube of order data might be aggregated by time period and by title, making the cube fast when you ask Questions concerning orders by week or orders by title.

What Are The Types Of Processing And Explain Each?

They are 6 types of processing in ssas ,they are

Process Full
Process Data
Process Index
Process Incremental
Process Structure

What Are The Difference Between Data Mart And Data Warehouse?

Datawarehouse is complete data where as Data mart is Subset of the same.

Ex: All the organisation data may related to finance department, HR, banking dept are stored in data warehouse where as in data mart only finance data or HR department data will be stored. So data warehouse is a collection of different data marts.
MuleSoft Most Frequently Asked Latest SSAS Interview Questions Answers
MuleSoft Most Frequently Asked Latest SSAS Interview Questions Answers

What Is Data Mart?

A data mart is a subset of an organizational data store, usually oriented to a specific purpose or major data subject that may be distributed to support business needs. Data marts are analytical data stores designed to focus on specific business functions for a specific community within an organization.

Data marts are often derived from subsets of data in a data warehouse, though in the bottom-up data warehouse design methodology the data warehouse is created from the union of organizational data marts.

They are 3 types of data mart they are

Logical data mart

What Is Data Warehouse In Short Dwh?

The data warehouse is an informational environment that

Provides an integrated and total view of the enterprise
Makes the enterprise’s current and historical information easily available for decision making
Makes decision-support transactions possible without hindering operational systems
Renders the organization’s information consistent
Presents a flexible and interactive source of strategic information

What Is The Difference Between Ssas 2005 And Ssas2008?

In 2005 its not possible to create an empty cube but in 2008 we can create an empty cube.
A new feature in Analysis Services 2008 is the Attribute Relationships tab in the Dimension Designer . to implement attribute relationship is complex in ssas 2005
we can create ONLY 2000 partitions per Measure Group in ssas 2005 and the same limit of partitions is removed in ssas 2008.

How You Provide Security To Cube?

By defining roles we provide security to cubes. Using roles we can restrict users from accessing restricted data.

Procedure as follows

Define Role
Set Permission
Add appropriate Users to the role

What Is The Maximum Size Of A Dimension?

The maximum size of the dimension is 4 gb.

What Is Deploy, Process And Build?

Bulid: Verifies the project files and create several local files.
Deploy: Deploy the structure of the cube(Skeleton) to the server.
Process: Read the data from the source and build the dimensions and cube structures

What Are Actions, How Many Types Of Actions Are There, Explain With Example?

Actions are powerful way of extending the value of SSAS cubes for the end user. They can click on a cube or portion of a cube to start an application with the selected item as a parameter, or to retrieve information about the selected item.

One of the objects supported by a SQL Server Analysis Services cube is the action. An action is an event that a user can initiate when accessing cube data. The event can take a number of forms. For example, a user might be able to view a Reporting Services report, open a Web page, or drill through to detailed information related to the cube data

Analysis Services supports three types of actions..

Report action: Report action Returns a Reporting Services report that is associated with the cube data on which the action is based.
Drill through: Drillthrough Returns a result set that provides detailed information related to the cube data on which the action is based.
Standard: Standard has five action subtypes that are based on the specified cube data.
Dataset: Returns a multidimensional dataset.
Proprietary: Returns a string that can be interpreted by a client application.
Rowset: Returns a tabular rowset.
Statement: Returns a command string that can be run by a client application.
URL:  Returns a URL that can be opened by a client application, usually a browser.

What Are Kpis And What Is Its Use?

In Analysis Services, a KPI is a collection of calculations that are associated with a measure group in a cube that are used to evaluate business success. We use KPI to see the business at the particular point, this is represents with some graphical items such as traffic signals,ganze etc

What Is Perspective, Have You Ever Created Perspective?

Perspectives are a way to reduce the complexity of cubes by hidden elements like measure groups, measures, dimensions, hierarchies etc. It’s nothing but slicing of a cube, for ex we are having retail and hospital data and end user is subscribed to see only hospital data, then we can create perspective according to it.

What Are Aggregations And Its Use?

Aggregations provide performance improvements by allowing Microsoft SQL Server Analysis Services (SSAS) to retrieve pre-calculated totals directly from cube storage instead of having to recalculate data from an underlying data source for each query. To design these aggregations, you can use the Aggregation Design Wizard.

This wizard guides you through the following steps

Selecting standard or custom settings for the storage and caching options of a partition, measure group, or cube.
Providing estimated or actual counts for objects referenced by the partition, measure group, or cube.
Specifying aggregation options and limits to optimize the storage and query performance delivered by designed aggregations.
Saving and optionally processing the partition, measure group, or cube to generate the defined aggregations.
After you use the Aggregation Design Wizard, you can use the Usage-Based Optimization Wizard to design aggregations based on the usage patterns of the business users and client applications that query the cube.

What Is The Minimum And Maximum Number Of Partitions Required For A Measure Group?

In 2005 a MAX of 2000 partitions can be created per measure group and that limit is lifted in later versions.
In any version the MINIMUM is ONE Partition per measure group.

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