CS614 Midterm Online Quiz

Data mining derives its name from the similarities between searching for valuable business information in a large database, for example, finding linked products in gigabytes of store scanner data, and mining a mountain for a _________ of valuable ore.

The users of data warehouse are knowledge workers in other words they are _______in the organization.

Pre-computed _______ can solve performance problems

The performance in a MOLAP cube comes from the O(1) look-up time for the array data structure.

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

Data warehousing and on-line analytical processing (OLAP) are _______ elements of decision support system.

Analytical processing uses ____________ , instead of record level access.

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

30.Data Warehouse is about taking / colleting data from different ________ sources:

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

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

DOLAP allows download of “cube” structures to a desktop platform with the need for shared relational or cube server.

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

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

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

To measure or quantify the similarity or dissimilarity, different techniques are available. Which of the following option represent the name of available techniques?

If w is the window size and n is the size of data set, then the complexity of merging phase in BSN method is___________

_____________ is a process which involves gathering of information about column through execution of certain queries with intention to identify erroneous records.

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

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

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

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

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...

Collapsing tables can be done on the ___________ relationships

For a smooth DWH implementation we must be a technologist.

Pre-join technique is used to avoid

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 ___________

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

Focusing on data warehouse delivery only often end up _________.

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

The input to the data warehouse can come from OLTP or transactional system but not from other third party database.

Data mining uses _________ algorithms to discover patterns and regularities in data.

The automated, prospective analyses offered by data mining move beyond the analyses of past events provided by _____________ tools typical of decision support systems.

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

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

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.

The goal of star schema design is to simplify ________

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

NUMA stands for __________

Grain is the ________ level of data stored in the warehouse.

_______ is an application of information and data.

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

_____________, if fits into memory , costs only one disk I/O access to locate a record by given key.

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 ____________.

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

Relational databases allow you to navigate the data in ____________ that is appropriate using the primary, foreign key structure within the data model.

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

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.

NUMA stands for __________

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