Interview Questions.

Question 1. What Is Data Integration?

Answer :

The technique of combining information from extraordinary resources.
The mixed information is provided to the customers with unified view.
Information from distinctive corporation domains are integrated – referred to as Enterprise Information Integration.
Useful for merging facts from distinctive technologies amongst establishments.
Question 2. What Is Transformation In Sas Data Integration?

Answer :

It is a metadata item which determines a way to extract facts, transform information and load data into information shops.

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Question three. What Is Change Analysis In Sas Di?

Answer :

Change analysis is the technique of evaluating one set of metadata to every other set of metadata and identifying the variations among the 2 units of metadata.

Question 4. What Is The Difference Between Unique Key And Primary Key?

Answer :

Unique secret is one or greater columns that may be used to uniquely pick out a row in a desk. A table can have one or greater precise keys. Unique keys can include null values. While on the other hand table may have most effective one primary key. One or greater columns in a number one key can not include null values.

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Question 5. Explain About Pivot – Columns To Rows?

Answer :

Data Integrator produces a row inside the output statistics set for every cost inside the certain pivot column.
More than one pivot column may be set as according to the need of utility’s records integration.
Pivot Sequence Column – Data Integrator increments a series variety for every row made from a pivot column.

Non-Pivot column – The columns that want to appear within the target.

Pivot Set – A organization of pivot columns, specific statistics field and header column.

Data Field Column – It contains the pivot records together with pivot columns values.

Header Column – Lists the name of the columns.

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Question 6. What Are The Benefits Of Data Integration?

Answer :

Following are the advantages of information integration:

Makes reporting, tracking, putting patron facts across the agency flexible and convenient.
Data usage is green.
Cost Effective.
Risk adjusted profitability control because it permits accurate records extraction.
Allows timely and reliable reporting, as records pleasant is the top generation for commercial enterprise challenges.
Question 7. Describe How To Adjust The Performance Of Data Integrator?

Answer :

Following are the ways to perform this:

Using array fetch size.
Ordering the joins.
Extracted statistics minimizing.
Locale conversion minimization.
Setting target-primarily based alternatives to optimize the performance.
Improving throughput.
Data type conversion minimization.
SAS Programming Tutorial Logistics Interview Questions
Question eight. What Do You Mean By Data Staging Area?

Answer :

Staging location of the statistics warehouse is both the storage place and set of system commonly referred as extract transformation load. The facts staging location is the whole thing among the operational supply systems and the data presentation vicinity.

Question 9. What Is Data Governance?

Answer :

It is the robust, dependable, repeatable and managed system both at point of input and thru subsequent downstream manage tests. This process exists to manipulate updates of business rules to maintain a level of consistency.

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Question 10. What Is Data Access?

Answer :

It is the get right of entry to by means of selected enterprise customers to raw (untransformed) data loads.

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Question 11. What Is Slowly Changing Dimension?

Answer :

This is the approach for monitoring modifications to dimensional table values so as to research tendencies. For instance, a measurement table named customers would possibly have columns for patron identification, home deal with and income. Each time the address or profits changes for a patron, a brand new row can be created for that patron inside the dimensional table and vintage row can be retained.

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Question 12. What Is Snowflake Schema?

Answer :

Snowflake schema is described in which a single truth desk is hooked up to a couple of measurement tables. The dimension are dependent to decrease update anomalies and to address single subject matters.

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Question thirteen. What Is Star Schema?

Answer :

Star schema is defined as database wherein unmarried fact table is connected to a couple of measurement tables. This is represented in a celeb schema.

Question 14. What Is Sas Application Server, Database Server, Sas Olap Server And Sas Metadata Server?

Answer :

SAS utility server affords SAS offerings to a consumer. On the other hand database server provides relational database carrier to a consumer. Oracle, DB2, and Teradata are examples of relational databases.  SAS OLAP server offers get right of entry to to multidimensional information. SAS metadata server gives metadata control offerings to at least one or greater client utility.

Question 15. What Is Operational Data And Operational System?

Answer :

Operational statistics is used as supply facts for a facts warehouse. While operational gadget is one or greater applications that offer source information for a facts warehouse.

SQL Server Analysis Services (SSAS) Interview Questions
Question sixteen. What Is The Use Of Sas Management Console?

Answer :

SAS control console application gives a unmarried person interface for appearing SAS administrative responsibilities.

Question 17. Name Some Data Transformation Used In Sas Di?

Answer :

Types of the data transformation are append, follow lookup standardization, create healthy code transformation, data transfer, facts validation, extract, reality table lookup, key effective records transformation, research, SAS rank, SAS kind, SAS splitter, SCD type 2 loader, SQL be part of, standardize transformation, Surrogate key generator , Transpose transformation, User written code transformation.

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Question 18. Describe About Metadata Object?

Answer :

It is a hard and fast of attributes that describe a desk, a server, a person and any other resource on a community.

SAS Programming Interview Questions
Question 19. Name The Scheduler For Scheduling Job And Explain The Scheduler?

Answer :

The scheduler used for scheduling process is manipulate m whilst CONTROL-m additionally person to view process drift and dependencies so that you can optimize commercial enterprise approaches effortlessly and effectively, even in a records center that includes multiple platform kinds (for example, Unix, Microsoft Windows, and MVS)

Question 20. What Is Change Analysis In Sas Di ?

Answer :

Change analysis is the system of evaluating one set of metadata to another set of metadata and figuring out the variations between the 2 sets of metadata.

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Question 21. Describe The Interaction Table In Sas Di?

Answer :

Table that describes the relationships between two or more tables. For instance, an intersection table ought to describe the various-to-many relationships between a desk of users and a table of companies.

Question 22. What Are The Prime Responsibilities Of Data Integration Administrator?

Answer :

Scheduling and executing the batch jobs.
Configuring, starting and preventing the actual-time offerings
Adapters configuration and dealing with them.
Repository utilization, Job Server configuration.
Access Server configuration.
Batch task publishing.
Real-time services publishing thru web offerings.
Question 23. Explain The Difference Between Alternate Key, Business Key, Foreign Key , Generated Key , Primary Key, Retained Key And Surrogate Key ?

Answer :

Alternate key's term also called specific key.
Business secret's one or more columns in a measurement table that incorporate the primary key in a supply table in an operational device.
Foreign key's one or greater columns which might be related to a number one key or particular key in any other table. A desk could have one or extra foreign keys. A foreign key's structured upon its related primary or specific key. In other phrases, a foreign key can't exist without that primary or particular key.
Generated keys is used to put in force surrogate keys and retained keys, one or greater columns that are used to uniquely become aware of a row in a desk. A table may have best one number one key. One or extra columns in a primary key can't incorporate null values. Retained key's a numeric column in a dimension desk this is the number one key of that desk.
Surrogate key's a column which incorporates precise integer values which can be generated sequentially when rows are added and up to date. In the related fact table, the surrogate secret is protected as a foreign key a good way to hook up with specific dimensions.
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Question 24. Explain About Data Integrator Metadata Reports?

Answer :

Browser-based analysis and reporting skills are furnished via Metadata reports.

The DI Metadata Reports are generated on metadata that associates with Data Integration jobs.

Other BO packages the ones are associated with Data Integration.

Three modules are furnished through Metadata Reports. They are:

Operational Dashboards.
Auto Documentation.
Impact and Lineage evaluation.
Logistics Interview Questions
Question 25. Explain About Various Caches Available In Data Integrator?

Answer :

NO_CACHE – It is used for not caching values.

PRE_LOAD_CACHE – Result column preloads and compares the column into the memory, previous to executing the lookup.

PRE_LOAD_CACHE is used when the table can precisely match within the reminiscence space.

DEMAND_LOAD_CACHE – Result column masses and compares the column into the memory while a feature performs the execution.

DEMAND_LOAD_CACHE is suitable whilst looking up the extraordinarily repetitive values with small subset of records.

Question 26. What Is Hierarchy Flattening?

Answer :

Construction of discern/toddler relationships hierarchy is referred to as Hierarchy Flattening.
A description of hierarchy within the vertical or horizontal layout is produced.
The hierarchy pattern consists of Parent column, Child Column, Parent Attributes and Child Attributes.
Hierarchy Flattening allows to apprehend the basic hierarchy of BI in a lucid way.
As the knocking down is done in horizontal or vertical format, the sub elements are effortlessly identified.
Base Sas Interview Questions
Question 27. Is Data Integration And Etl Programming Is Same?

Answer :

No, Data Integration and ETL programming are unique.
Passing of information to exclusive systems from different structures is referred to as data integration.
It may integrate records within the same software.
ETL, alternatively, is to extract the information from distinctive resources.
The primary ETL device task is to convert the facts and hundreds into different objects or tables.
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Question 28. Describe About Physical Data Integration?

Answer :

Physical Data Integration is all approximately developing new system that replicates statistics from the supply structures. This manner is achieved to manipulate the information unbiased of the authentic system. Data Warehouse is the example of Physical Data Integration. The advantages of PDI consist of statistics model control, combination of data from diverse sources, like mainframes, flat documents, databases.

Question 29. Why Is Sas Data Integration Studio Important?

Answer :

Companies are realizing that so that you can succeed they want an incorporated view of their facts and SAS Data Integration Studio is the single device that provides the flexibility, reliability and agility had to respond to new records integration challenges. Regardless of the undertaking, SAS Data Integration Studio users can respond with pace and performance, reducing the overall value of statistics integration.

SAS Macro Interview Questions
Question 30. For Whom Is Sas Data Integration Studio Designed?

Answer :

SAS Data Integration Studio empowers records integration managers and architects to paintings greater correctly, manage exchange efficaciously and deliver awesome outcomes quicker.

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