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Top 10 MSBI Interview Questions
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SSIS tools are employed to do simple tasks like copying the data from one place to another place. SSIS Tools are also used to provide enterprise solutions in which users build complex packages. Various tools in SSIS are:
The SSIS Architecture has four important Parts
SSRS uses various data sources for importing and exporting the data; they are:
We can set SSIS Packages in three ways.
With the help of Manifest. Generate a deployment utility with the help of its features. It is generated in the bin folder of the solution. When the package is developed, utility files are copied and displayed on the product through the manifest file.
Through the DTExec.exe utility, we can set up SSIS packages on production.
We can arrange SSIS packages on production by importing packages from SQL Server Management Studio to Microsoft Database.
|It is a DDL Command.||It is a DML Command.|
|It deletes the data from the table without doing log entries for every row deletion.||It deletes a particular record or all records and does log entries for every row deletion.|
|We cannot use WHERE Clause with Truncate Command||n DELETE Command, we can use WHERE Clause.|
The full form of OLAP is On-Line Analytical Processing. It comes under the applications that enable the collection, reproduction, and manipulation of Multidimensional data, with an objective of data analysis.
The tools used in MSBI are as follows:
SQL SERVER ANALYSIS SERVICES(SSAS): SQL Server Analysis Services is used in MSBI for sharing metadata, multidimensional analysis, security, speed, etc. It creates data mining and online analytical processing functionalities.
SQL SERVER INTEGRATION SERVICES(SSIS): It is used in MSBI for implementing various data integration activities and gathering data from different data sources and saves them in a centralized location.
SQL SERVER REPORTING SERVICES(SSRS): It is used in MSBI for reporting purposes. It contains processing components and two important processing components are as follows:
Performance Point services: MSBI uses these services to check and analyze the business. It is also used to make decisions that attain the Organization’s strategies and goals. It provides tools for building scorecards, dashboards, and key performance indicators.
The MDX Functions are used in MDX Queries or MDX Expressions. MDX Functions are Categorised into four types, they are:
Functions(red dot function): These functions return the object being referenced. Function: These functions are regularly used in Dimension or cell. Function(): These functions need parenthesis, but they will not take any arguments. Function(arguments): These functions take arguments and return the result after performing the required operation on the arguments.
The Most Commonly used functions are as follows:
A Matrix in SSRS is a data zone that is associated with the report set. Matrices allow us to generate cross-reference reports through the report variables displayed on rows and columns.
Sub-Reports can be created from the Main reports. The Parameters present in the Main report are passed to the sub-report, and according to that, a report is generated.
The default code page of SSIS is 1252(ANSI Latin). The code page, also recognized as a character set, is a collection of 256 uppercase plus lowercase letters, symbols, and numbers. The printable characters are the first 128 values are identical for all character collection choices.
A control flow consists of one or more tasks plus containers that execute during the package runs. To control order or define those conditions as running the subsequent task or container within the package control flow, we apply precedence constraints to correlate the tasks also within a package. A subset from tasks, including containers, can be grouped plus run frequently as a unit inside the package control flow. SQL Server Integration Services (SSIS) gives three various sorts of control flow elements: Containers that give structures within packages, Tasks that give functionality, Precedence Constraints that connect the containers, executables, also tasks within an ordered control flow.
Variables save values that an SSIS package also its containers, event handlers, and tasks can utilize at run time. This script within the Script task also the Script component can utilize variables. The precedence constraints which sequence tasks, including containers within a workflow, can utilize variables during their constraint definitions add expressions. Integration Services maintains two types of variables: user-defined variables plus system variables. User-defined variables defined through package developers. Also, system variables are defined through Integration Services. You can build the desired number of user-defined variables as a package needs, but you can’t build further system variables.
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There are two essential benefits of utilizing embedded code within a report they are:
The database which satisfies the FASMI rules is called an OLAP database.
There are three different types of parameters in SSRS they are:
The Foreach Loop container means a different atomic unit from work that can be restarted. But, the checkpoint file doesn’t hold data regarding the work finished by the child containers. Also, the Foreach Loop container plus its child containers run repeatedly whenever the package restarts.
Early Arriving Facts sometimes become unavoidable because of lag or error within Dimension ETL or else may be due to the logic of ETL. To manage Early arriving Facts, we can build a model Dimension including natural or business key plus retain the rest of the attributes as null or else default.
Whenever a data flow element utilizes a transformation toward column data, plucks data from sources, or else stores data within targets, errors can happen. Errors generally happen because of random data values.
There are three types of errors in SSIS they are
A basic unit of Analysis and storage within the analysis services is called the cube. A cube is a set of data that is aggregated to permit Queries and to return data fastly. Cubes are arranged into dimensions plus measures come from the fact table.
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Query parameters are exposed within the query of the data sources which are to be involved in this SQL script where clause of the SQL which can receive parameters. Query parameters start with the @ symbol.
It permits us to designate different SQL server objects among various cases of SQL Server. Object incomes from the table, saved procedures, user-defined functions, and so on.
Processing is an essential and resource-intensive operation within the data warehouse lifecycle and requires to be significantly optimized plus executed. Analysis Services 2005 gives high performance plus scalable processing architecture, including a complete collection of controls as database administrators.
Parallelism is accomplished utilizing MaxConcurrentExecutable stuff like the package. Its default is -1, and it is calculated as the amount/number of computers + 2.
OLAP is abbreviated as On-Line Analytical Processing. It is a kind of application and technology that permits the storage, collection, manipulation, and also reproduction of multidimensional data, including the aim of that Analysis.
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Your reports can just be deployed upon a reporting services site. Your sole choice for seeing them from different sites signifies an HTTP link. Any tools, like SharePoint, give controls permitting you to see reports within the context of the various websites, though the report is yet deployed to plus received from reporting services.
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In enhancement to publishing reports over a report server, you can create reports utilizing the Report Designer which is instantly integrated, including Visual Studio language projects. You can insert reports right in some Windows Forms or else ASP.NET Web application without access on a report server. The data access within inserted reports means a natural extension of that Visual Studio data facilities. Not only can you utilize regular databases as a root of data as your reports, but you can utilize object collections as well.
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