- World's Largest Collection of Interview Questions & Answers, FAQs, queries, sample papers, exam papers, dumps, what, why, how, where, when questions
Our Services
Get 9,000 Interview Questions & Answers in an eBook.

Get it now !!
Send your Resume to 6000 Companies
Data Mart Interview Questions & Answers - Learning Mode

Data Mart Interview Questions & Answers - Learning Mode

The data mart is a subset of the data warehouse that is usually oriented to a specific business line or team. Data marts are small slices of the data warehouse. Whereas data warehouses have an enterprise-wide depth, the information in data marts pertains to a single department. A data mart is a repository of data that is designed to serve a particular community of knowledge workers.

Try Data Mart Interview Questions & Answers - Exam Mode


Sort By : Latest First | Oldest First | By Rating

Data Mart Interview Questions & Answers - Learning Mode
Try Data Mart Interview Questions & Answers - Exam Mode
Question: What is the definitions for Datawarehose and Datamart?

Answer: Datamart is subset of Datawarehouse we can say a <br>datamart is collection of individual departmental <br>information...<br>Where as datawarehouse in collection of datamart. Source:
Question: What is difference between drill & scope of analysis?

Answer: Drilling can be done in drill down, up, through, and across; scope is the overall view of the drill exercise.
Question: What is data mart?

Answer: Data Marts is used on a business division/department level. <br>A data mart only contains the required subject specific <br>data for local analysis. <br> A database, or collection of databases, designed to help <br>managers make strategic decisions about their business. <br>data marts are usually smaller and focus on a particular <br>subject or department. Some data marts, called dependent <br>data marts, are subsets of larger data warehouses. A data & Source:
Question: What are Data Marts

Answer: Data Mart is a segment of a data warehouse that can provide data for reporting and analysis on a section, unit, department or operation in the company, e.g. sales, payroll, production. Data marts are sometimes complete individual data warehouses which are usually smaller than the corporate data warehouse.
Question: Briefly state different between data ware house & data mart?

Answer: Data warehouse is made up of many datamarts. DWH contain many subject areas. However, data mart focuses on one subject area generally. E.g. If there will be DHW of bank then there can be one data mart for accounts, one for Loans etc. This is high-level definitions.
Question: what is data validation strategies for data mart v...

Answer: Data validation strategies are often heavily influenced by the architecture for the application. If the application is already in production it will be significantly harder to build the optimal architecture than if the application is still in a design stage. If a system takes a typical architectural approach of providing common services then one common component can filter all input and output thus optimizing the rules and minimizing efforts.

There are three main models to think about whe Source:
Question: What is the difference between a data warehouse and a data mart?

Answer: Datamart is something which consists of only one type of
data whereas datwarehouse consists of data of different
type.For example all the organisation data say data related
to finance department,HR,Banking dept are stored in
datawarehouse whereas in datamart say only finance data
will stored.So datawarehouse is a collection of different
datamarts. Source:
Question: What is Meta data?

Answer: Metadata is data about data. E.g. if in data mart we are receiving any file. Then metadata will contain information like how many columns, file is fix width/limited, ordering of fields, data types of field etc.
Question: what is data validation strategies for data mart validation after loading process

Answer: Data validation is generally done manually in DWH in this case if source and TGT are relational you need to create SQL scripts to validate source and target data and if source is Flat file or non relational database you can use excel if data is very less or create dummy tables to validate your ETL code. Source:
Question: For faster process, what we will do with the Universe?

Answer: For a faster process create aggregate tables and write better sql so that the process would fast.
Question: What is type 2 version dimension?

Answer: Version dimension is the SCD type II in real time it using because of it will maintain the current data and full historical data.


India News Network
Latest 20 Questions
Payment of time- barred debt is: (a) Valid (b) Void (c) Illegal (d) Voidable
Consideration is defined in the Indian Contract Act,1872 in: (a) Section 2(f) (b) Section 2(e) (c) Section 2(g) (d) Section 2(d)
Which of the following is not an exception to the rule, "No consideration, No contract": (a) Natural love and affection (b) Compensation for involuntary services (c) Completed gift (d) Agency
Consideration must move at the desire of: (a) The promisor (b) The promisee (c) The promisor or any other party (d) Both the promisor and the promisee
An offer which is open for acceptance over a period of time is: (a) Cross Offer (b) Counter Offer (c) Standing Offer (d) Implied Offer
Specific offer can be communicated to__________ (a) All the parties of contract (b) General public in universe (c) Specific person (d) None of the above
_________ amounts to rejection of the original offer. (a) Cross offer (b) Special offer (c) Standing offer (d) Counter offer
A advertises to sell his old car by advertising in a newspaper. This offer is caleed: (a) General Offer (b) Special Offer (c) Continuing Offer (d) None of the above
In case a counter offer is made, the original offer stands: (a) Rejected (b) Accepted automatically (c) Accepted subject to certain modifications and variations (d) None of the above
In case of unenforceable contract having some technical defect, parties (a) Can sue upon it (b) Cannot sue upon it (c) Should consider it to be illegal (d) None of the above
If entire specified goods is perished before entering into contract of sale, the contract is (a) Valid (b) Void (c) Voidable (d) Cancelled
______________ contracts are also caled contracts with executed consideration. (a) Unilateral (b) Completed (c) Bilateral (d) Executory
A offers B to supply books @ Rs 100 each but B accepts the same with condition of 10% discount. This is a case of (a) Counter Offer (b) Cross Offer (c) Specific Offer (d) General Offer
_____________ is a game of chance. (a) Conditional Contract (b) Contingent Contract (c) Wagering Contract (d) Quasi Contract
There is no binding contract in case of _______ as one's offer cannot be constructed as acceptance (a) Cross Offer (b) Standing Offer (c) Counter Offer (d) Special Offer
An offer is made with an intention to have negotiation from other party. This type of offer is: (a) Invitation to offer (b) Valid offer (c) Voidable (d) None of the above
When an offer is made to the world at large, it is ____________ offer. (a) Counter (b) Special (c) General (d) None of the above
Implied contract even if not in writing or express words is perfectly _______________ if all the conditions are satisfied:- (a) Void (b) Voidable (c) Valid (d) Illegal
A specific offer can be accepted by ___________. (a) Any person (b) Any friend to offeror (c) The person to whom it is made (d) Any friend of offeree
An agreement toput a fire on a person's car is a ______: (a) Legal (b) Voidable (c) Valid (d) Illegal
Cache = 0.046875 Seconds