SQL Server Reporting Services Interview Preparation Guide
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SSRS Interview Questions and Answers will guide us now that SQL Server Reporting Services (SSRS) is a server-based report generation software system from Microsoft. It can be used to prepare and deliver a variety of interactive and printed reports. It is administered via a web interface. Reporting services features a web services interface to support the development of custom reporting applications. So learn SSRS by this SQL Server Reporting Services Interview Questions with Answers guide

17 SSRS Questions and Answers:

1 :: What can SQL Server Reporting Services do?

SQL Server Reporting Service is one of the server-based software systems that generate reports developed by Microsoft. It is used for preparing and delivering interactive and variety of printed reports. It is administered through an interface that is web based. Reporting services utilizes a web service interface for supporting and developing of customized reporting applicatons. It can be competed with Crystal Reports and other business intelligent tools.
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2 :: Explain the architecture of reporting services?

Reporting services architecture is comprises of integrated components. It is multi-tiered, included with application, server and data layers. This architecture is scalable and modular. A single installation can be used across multiple computers. It includes the following components:

- Report Manager, Reporting Designer, Browser Types Supported by Reporting services, Report server, Report server command line utilities, Report Server Database, Reporting Services Extensibility, Data sources that is supported by Reporting Services.
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3 :: Describe Reporting Lifecycle?

The Reporting Lifecycle includes

- Report designing – The designing is done in Visual Studio Report Designer. It generates a class which embodies the Report Definition.

- Report processing – The processing includes binging the report definition with data from the report data source. It performs on all grouping, sorting and filtering calculations. The expressions are evaluated except the page header, footer and section items. Later it fires the Binding event and Bound event. As a result of the processing, it produces Report Instance. Report instance may be persisted and stored which can be rendered at a later point of time.

- Report Rendering: Report rendering starts by passing the Report Instance to a specific rendering extension (HTML or PDF formats). The instance of reports is paged if paging supported by output format. The expressions of items are evaluated in the page header and footer sections for every page. As a final step, the report is rendered to the specific output document.
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4 :: What are the ways to tune Reporting Services?

To tune-up the Reporting Services, follow the below mentioned ways:

- Expand the Server or utilizing the reporting services of another database server. For better embedding of report contents, report application’s logic and characteristics can have a duplicate copy of data.

- Replication of data continuously. Using nolock, the issues of locking can well be resolved and the performance of the query can be improved. This can be done by using dirty read at the time of duplicating the data is unavailable.
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5 :: How to schedule SSAS Database backup.

SQL Server Management Studio is used for taking backup of SQL Server Analysis Services database. SSAS backup option can not perform the SSAS database backup operation. To perform this task, create SQL Server Agent Job and schedule that job as per custom requirement. The following is the process:

► Right click the job folder of the SQL Agent node in SSMS.
► Select the option New job
► Specify the Job name for identification purpose.
► Go to Steps Page and click the New button.
► Select SQL Server Analysis Services command as the type of job after entering the name of the step and enter the server name.
► Enter the following command.

<Backup xmlns="http://schemas.microsoft.com/analysisservices/2003/engine">
<Object>
<DatabaseID>AdventureWorksDW</DatabaseID>
</Object>
<File>AdventureWorksDW.abf</File>
<AllowOverwrite>true</AllowOverwrite>
<Password>password</Password>
</Backup>

► Click on OK
► Goto the Schedule page for creating schedule as per the requirements.
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6 :: How to Generate an Auto Incremental Number in a SSIS Package?

SSIS package does not support any function to generate auto incremental numbers. A script component can be used for the designated task. The steps are as follows:

1. Drag and drop the Script Document to the Data flow and select the Script Component Type as Transformation.
2. Double click the Script Component.
3. Select the column which is to pass through the script component, in the Input Columns tab.
4. Add a column with an integer data type, in the Inputs and Outputs tab.
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7 :: Lookups are a key component in SQL Server Integration Services (SSIS). Explain its purpose?

Data from two sources is combined by Lookup Transformation. There are matching fields from these sources. Case insensitive transformations is performed by the lookups. For the purpose of accessing additional information in relation to the tables is one of the purposes of lookups. Lookups can be used in data warehousing.

Lookups are used for the following purposes

► Data Cleansing
► Error Tolerance
► Data search in data warehouse
► Optimizations using cache modes
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8 :: How to unzip a File in SSIS?

The following is the process for Unzip a file in SSIS.

► Use Execute Process Task in the Control Flow Task.
► From BIDS, drag and drop an Execute Process Task to the control flow and configure.

In the Execute Process, perform the following configurations:
► Executable: The path of the application that is being used.
► Arguments: Need to supply the arguments to extract the zipped files. –o+ is the default parameter for overwriting files if they exist.
► Working Directory: The current directory for all process.
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9 :: Define Truncate and Delete commands?

Truncate:
► Truncate command is used to remove all rows of the column.
► The removed records are not recorded in the transaction log.
► It is the fast way to remove all the records from the table.
► The records once removed can’t be rolled back.
► It can’t activate trigger.
► It resets the identity of the column.

Delete:
Delete command removes records one at a time and logs into the transaction log.
It can be used with or without where clause.
The records can be rolled back.
It activates trigger.
It doesn’t reset the identity of the column.
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10 :: What are the ways to controlling Cursor Behavior?

Cursors behavior can be controlled by dividing them into cursor types: forward-only, static, keyset-driven, and dynamic. SQL server supports keywords SCROLL and INSENSITIVE to define cursor behavior in terms of scrollability and sensitivity.
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