CS614 Midterm Online Quiz

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.

During the application specification activity, we also must give consideration to the organization of the applications.

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 _______.

Normalization effects performance

Horizontal splitting breaks a table into multiple tables based upon_______

To identify the __________________ required we need to perform data profiling

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

____________ in agriculture extension is that pest population beyond which the benefit of spraying outweighs its cost.

 ________ gives total view of an organization

Analytical processing uses ____________ , instead of record level access.

The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.

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

NUMA stands for __________

Analytical processing uses ____________ , instead of record level access.

NUMA stands for __________

Non uniform distribution, when the data is distributed across the processors, is called ______.

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

B-Tree is used as an index to provide access to records

For a relation to be in 4NF it must be:-

The goal of ideal parallel execution is to completely parallelize those parts of a computation that are not constrained by data dependencies. The __________ the portion of the program that must be executed sequentially, the greater the scalability of computation.

During ETL process of an organization, suppose you have data which can be transformed using any of the transformation method. Which of the following strategy will be your choice for least complexity?

If every key in the data file is represented in the index file then index is :

Investing years in architecture and forgetting the primary purpose of solving business problems, results in inefficient application. This is the example of _________ mistake.

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 ___________

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

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

De-Normalization normally speeds up

The goal of ______is to look at as few block as possible to find the matching records.

People that design and build the data warehouse must be capable of working across the organization at all levels

Which statement is true for De-Normalization?

Pipeline parallelism focuses on increasing throughput of task execution, NOT on __________ sub-task execution time.

_________ breaks a table into multiple tables based upon common column values.

In horizontal splitting, we split a relation into multiple tables on the basis of

DTS allows us to connect through any data source or destination that is supported by ____________

Focusing on data warehouse delivery only often end up _________.

Suppose the amount of data recorded in an organization is doubled every year. This increase is __________ .

Slice and Dice is changing the view of the data.

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:

The STAR schema used for data design is a __________ consisting of fact and dimension tables. :

In a traditional MIS system, there is an almost linear sequence of queries.

All data is ______________ of something real. I An Abstraction II A Representation Which of the following option is true?

For a given data set, to get a global view in un-supervised learning we use

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

Ad-hoc access means to run such queries which are known already.

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

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?

Naturally Evolving architecture occurred when an organization had a _______ approach to handling the whole process of hardware and software architecture.

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 ___________

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.

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.