CS614 Midterm Online Quiz

 ________ gives total view of an organization

When performing objective assessments, companies follow a set of principles to develop metrics specific to their needs, there is hard to have “one size fits all” approach. Which of the following statement represents the pervasive functional forms?

If some error occurs, execution will be terminated abnormally and all transactions will be rolled back. In this case when we will access the database we will find it in the state that was before the ____________.

Data mining evolve as mechanism to cater the limitations of _____ systems to deal massive data sets with high dimensionality, new data types, multiple heterogeneous data resources etc...

Analytical processing uses ____________ , instead of record level access.

: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is

A single database, couldn‟t serve both operational high performance transaction processing and DSS, analytical processing, all at the same time.

Execution can be completed successfully or it may be stopped due to some error. In case of successful completion of execution all the transactions will be ___________

Virtual cube is used to query two similar cubes by creating a third “virtual” cube by a join between two cubes.

A data warehouse implementation without an OLAP tool is always possible.

Node of a B-Tree is stored in memory block and traversing a B-Tree involves ______ page faults.

NUMA stands for __________

Cube is a __________ entity containing values of a certain fact at a certain aggregation level at an intersection of a combination of dimensions.

The growth of master files and magnetic tapes exploded around the mid- _______. :

_____ contributes to an under-utilization of valuable and expensive historical data, and inevitably results in a limitedcapability to provide decision support and analysis.

Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.

Pakistan is one of the five major ________ countries in the world.

5 million bales.

Multi-dimensional databases (MDDs) typically use ___________ formats to store pre-summarized cube structures.

Data mining is a/an ______ approach , where browsing through data using mining techniques may reveal something that might be of interest to the user as information that was unknown previously.

To identify the __________________ required we need to perform data profiling

A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.

Data Transformation Services (DTS) provide a set of _____ that lets you extract, transform, and consolidate data from disparate sources into single or multiple destinations supported by DTS connectivity.

DSS queries do not involve a primary key

For good decision making, data should be integrated across the organization to cross the LoB (Line of Business). This is to give the total view of organization from:

It is observed that every year the amount of data recorded in an organization :

Pre-computed _______ can solve performance problems

Transactional fact tables do not have records for events that do not occur. These are called

The divide & conquer cube partitioning approach helps alleviate the ____________ limitations of MOLAP implementation.

Data Warehouse provides the best support for analysis while OLAP carries out the _________ task.

A ________ dimension is a collection of random transactional codes, flags and/text attributes that are unrelated to any particular dimension. The ______ dimension is simply a structure that provides a convenient place to store the ______ attributes.

There are many variants of the traditional nested-loop join, if there is an index is exploited, then it is called……

It is observed that every year the amount of data recorded in anorganization is

Data mining evolve as a mechanism to cater the limitations of ________ systems to deal massive data sets with high dimensionality, new data types, multiple heterogeneous data resources etc.

If someone told you that he had a good model to predict customer usage, the first thing you might try would be to ask him to apply his model to your customer _______, where you already knew the answer.

NUMA stands for __________

in agriculture extension is that pest population beyond which the benefit of spraying outweighs levels

The purpose of the House of Quality technique is to reduce ______ types of risk.

Pre-join technique is used to avoid

For good decision making, data should be integrated across the organization to cross the LoB (Line of Business). This is to give the total view of organization from:

For a DWH project, the key requirement are ________ and product experience.

Pakistan is one of the five major ________ countries in the world.

Taken jointly, the extract programs or naturally evolving systems formed a spider web, also known as

If „M‟ rows from table-A match the conditions in the query then table-B is accessed „M‟ times. Suppose table-B has an index on the join column. If „a‟ I/Os are required to read the data block for each scan and „b‟ I/Os for each data block then the total cost of accessing table-B is _____________ logical I/Os approximately.

To judge effectiveness we perform data profiling twice.

Horizontal splitting breaks a table into multiple tables based upon_______

The key idea behind ___________ is to take a big task and break it into subtasks that can be processed concurrently on a stream of data inputs in multiple, overlapping stages of execution.

The purpose of the House of Quality technique is to reduce ______ types of risk.

Pre-computed _______ can solve performance problems

With data mining, the best way to accomplish this is by setting aside some of your data in a vault to isolate it from the mining process; once the mining is complete, the results can be tested against the isolated data to confirm the model's _______.