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Data modelling is the process of constructing 1. An orderly arrangement of data elements 2. A graphic representation of data contained in an information system 3. Physical elements of the information system 4. A verbal description of the data need
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How we are going to decide which schema we are going to implement in the data warehouse?
ie. whether it should be Star schema or snow flake schema?
SashaFroyland
- Mar 2nd, 2008
Pro Star Schema: Users find easier to query and faster query times. Space consequences of repeated data makes little difference as Dimensional table hold relatively fewer rows then the la...
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Conceptual Models
What are Conceptual Mdels
jay_yasho
- Mar 31st, 2009
A conceptual ER model show how the business world sees the information. It shows only critical details in order to emphasize business rules and user objects. ideally It includes only significant...
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Data Modeling
What is the impact of Data Modeling Software Engineering?
JayashreePatil
- Jul 2nd, 2008
GUI Representation of a Data model of any system helps in understanding the data flow and relationship between the entities.
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Components of Information System Architecture
List six key components of Information System Architecture. Which of these relate to database design and Why?
MAbdullah47
- Feb 9th, 2009
1. Data 2. Processes 3. Network 4. People 5. Events and points in time 6. Reasons All of them related to the DB Design . During the database design we need data to define it’s attributes; proces...
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Relational and Dimensional Data Modeling
How does Relational Data Modeling differ from that of Dimensional Data Modeling?
wmilford
- Jan 16th, 2009
In relational models data is normalized to 1st, 2nd or 3rd Normal form. In dimensional models data is denormalized. The typical design is that of a Star where their is a central fact table containing...
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Scrum Development in respects to the Burndown Chart
One popular tool in scrum development is the burndown chart, which diagrams the day-to-day progress that a scrum development team is making on a particular sprint. Essentially, at the end of each day in the sprint, the team estimates how many hours of work they still have to do to complete the sprint requirements. If all is going according to plan, the actual burndown will occur at the optimal rate,...
Joelaadams
- Jun 29th, 2010
Scrum sets out a fixed length for each Sprint (In classic SCRUM, 30 days or four weeks). Hence, if you are running ahead of schedule, it will be necessary to add tasks to avoid idle time at the ...
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Agile Approaches
One feature that characterizes all of the agile approaches that have arisen in recent years is the requirement that software features be developed in small incremental cycles of two to six weeks in duration. Explain the positive and negative effects that this requirement produces with respect to the willingness of management to permit the adoption of agile processes.
priyanka2000
- Jun 17th, 2010
Positives: A customer demo can be given at the end of a sprint , hence if there is anything that the customer does not like , that can be captured , instead of propagating that throughout the delivery...
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Data Options and Parameters
What is the distinction between data options and parameters?
seethala_goutham
- Jun 11th, 2009
Data options means it sends the data in diff forms and where as parameters supports the data which sends through it
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Informatica Architecture
Can you Explain about Informatica Architecture ? and what difference between service based and service oriented ?
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Answered by: venkatesh
- Sep 21st, 2011
|----------------------------|---------------------------------|-------------------| | SOURCES |client tools | TARGET | | like ,oracle,db2 |-------------------------------- | | | |powercenter repositery | | | |------------------------------- | | |________________|repositery server | | --------------------------------|-------------------|
venkatesh
- Sep 21st, 2011
|----------------------------|---------------------------------|-------------------| | SOURCES |client tools | TARGET | | like ,oracle,db2 |-...
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What is difference between query calculation and layout calculation
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Sandhya.Kishan- Member Since Mar-2012 | Apr 11th, 2012
The query calculation helps to create a report to add a new row or column with values that are based on a calculations. Layout calculation helps to create a report which contains run time information such as current time, date, and user name.It does not perform any operations on data.
Sandhya.Kishan
- Apr 11th, 2012
The query calculation helps to create a report to add a new row or column with values that are based on a calculations.
Layout calculation helps to create a report which contains run time information such as current time, date, and user name.It does not perform any operations on data. -
How to capture webtable values
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Sandhya.Kishan- Member Since Mar-2012 | Apr 11th, 2012
By using the function getroproperty("field name") we can capture webtable values.
Sandhya.Kishan
- Apr 11th, 2012
By using the function getroproperty("field name") we can capture webtable values.
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What is a toponomy database ?
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Answered by: Sandhya.Kishan
- Apr 18th, 2012
Toponomy database is a collection of data related to the study of place names, their origins,meaning,topology and their use.
Sandhya.Kishan
- Apr 18th, 2012
Toponomy database is a collection of data related to the study of place names, their origins,meaning,topology and their use.
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MVC Design pattern
what is the difference between MVC1 and MVC2 in j2EE?
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Sandhya.Kishan- Member Since Mar-2012 | May 14th, 2012
1.MVC1 consists of Web browser accessing Web-tier JSP pages. The JSP pages access Web-tier JavaBeans that represent the application model, and the next view to display is determined by hyperlinks selected in the source document or by request parameters. 2.MVC1 is page-centric design, meaning any JSP page can either present in the JSP or may be called directly from the JSP page. 3.MVC1 Combines both presentation logic with the Business logic. 4.MVC1 we can have multiple controller servlets. 1.MVC2 introduces a controller servlet between the browser and the JSP pages. The controller centralizes the logic for dispatching requests to the next view based on the request URL, input parameters, and application state. 2.MVC2 removes the page-centric property by separating Presentation, Control logic and Application state. 3.MVC2 can have only one controller servlet .
Sandhya.Kishan
- May 14th, 2012
1.MVC1 consists of Web browser accessing Web-tier JSP pages. The JSP pages access Web-tier JavaBeans that represent the application model, and the next view to display is determined by hyperlinks sele...
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Form of Fact and Dimension Table
Fact table is in normal form or demoralized form?
Dimension table is in which form? Explain -
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Match the following in the context of data flow diagram :
i. circle a. source of data ii. square b. file or data base iii. arrow c. conversion process iv. parallel line d. data flow
1. l-a, ll-b,lll-c, lv-d
2. l-c, ll-a, lll-d, lv-b
3. l-c,ll-d, lll-a, lv-b
4. l-b, ll-a, lll-d, iv-canoosha kokkula
- Jul 2nd, 2009
Answer is 2Circle - Conversion processSquare - Source of data
Arrow - Data flowParallel line - File or databaseSashaFroyland
- Mar 2nd, 2008
None of the above (in my opinion).A -> C -> D -> bA) source, then data flows to C) where it's converted or transformed, then it flows to D) parallel where it's pipelined into the B) the database as both updates in inserts.
Data Modeling Interview Questions
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