McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Uncategorized topics .
| 51. |
________________ is an expensive process in building an expert system. |
| A. | Analysis. |
| B. | Study. |
| C. | Design. |
| D. | Information collection. |
| Answer» D. Information collection. | |
| 52. |
The full form of KDD is _________. |
| A. | Knowledge database. |
| B. | Knowledge discovery in database. |
| C. | Knowledge data house. |
| D. | Knowledge data definition. |
| Answer» B. Knowledge discovery in database. | |
| 53. |
The first International conference on KDD was held in the year _____________. |
| A. | 1996. |
| B. | 1997. |
| C. | 1995. |
| D. | 1994. |
| Answer» C. 1995. | |
| 54. |
Removing duplicate records is a process called _____________. |
| A. | recovery. |
| B. | data cleaning. |
| C. | data cleansing. |
| D. | data pruning. |
| Answer» B. data cleaning. | |
| 55. |
____________ contains information that gives users an easy-to-understand perspective of the information stored in the data warehouse. |
| A. | Business metadata. |
| B. | Technical metadata. |
| C. | Operational metadata. |
| D. | Financial metadata. |
| Answer» A. Business metadata. | |
| 56. |
_______________ helps to integrate, maintain and view the contents of the data warehousing system. |
| A. | Business directory. |
| B. | Information directory. |
| C. | Data dictionary. |
| D. | Database. |
| Answer» B. Information directory. | |
| 57. |
Discovery of cross-sales opportunities is called ________________. |
| A. | segmentation. |
| B. | visualization. |
| C. | correction. |
| D. | association. |
| Answer» D. association. | |
| 58. |
Data marts that incorporate data mining tools to extract sets of data are called ______. |
| A. | independent data mart. |
| B. | dependent data marts. |
| C. | intra-entry data mart. |
| D. | inter-entry data mart. |
| Answer» B. dependent data marts. | |
| 59. |
____________ can generate programs itself, enabling it to carry out new tasks. |
| A. | Automated system. |
| B. | Decision making system. |
| C. | Self-learning system. |
| D. | Productivity system. |
| Answer» D. Productivity system. | |
| 60. |
The power of self-learning system lies in __________. |
| A. | cost. |
| B. | speed. |
| C. | accuracy. |
| D. | simplicity. |
| Answer» C. accuracy. | |
| 61. |
Building the informational database is done with the help of _______. |
| A. | transformation or propagation tools. |
| B. | transformation tools only. |
| C. | propagation tools only. |
| D. | extraction tools. |
| Answer» A. transformation or propagation tools. | |
| 62. |
How many components are there in a data warehouse? |
| A. | two. |
| B. | three. |
| C. | four. |
| D. | five. |
| Answer» D. five. | |
| 63. |
Which of the following is not a component of a data warehouse? |
| A. | Metadata. |
| B. | Current detail data. |
| C. | Lightly summarized data. |
| D. | Component Key. |
| Answer» D. Component Key. | |
| 64. |
________ is data that is distilled from the low level of detail found at the current detailed leve. |
| A. | Highly summarized data. |
| B. | Lightly summarized data. |
| C. | Metadata. |
| D. | Older detail data. |
| Answer» B. Lightly summarized data. | |
| 65. |
Highly summarized data is _______. |
| A. | compact and easily accessible. |
| B. | compact and expensive. |
| C. | compact and hardly accessible. |
| D. | compact. |
| Answer» A. compact and easily accessible. | |
| 66. |
A directory to help the DSS analyst locate the contents of the data warehouse is seen in ______. |
| A. | Current detail data. |
| B. | Lightly summarized data. |
| C. | Metadata. |
| D. | Older detail data. |
| Answer» C. Metadata. | |
| 67. |
Metadata contains atleast _________. |
| A. | the structure of the data. |
| B. | the algorithms used for summarization. |
| C. | the mapping from the operational environment to the data warehouse. |
| D. | all of the above. |
| Answer» D. all of the above. | |
| 68. |
Which of the following is not a old detail storage medium? |
| A. | Phot Optical Storage. |
| B. | RAID. |
| C. | Microfinche. |
| D. | Pen drive. |
| Answer» D. Pen drive. | |
| 69. |
The data from the operational environment enter _______ of data warehouse. |
| A. | Current detail data. |
| B. | Older detail data. |
| C. | Lightly summarized data. |
| D. | Highly summarized data. |
| Answer» A. Current detail data. | |
| 70. |
The data in current detail level resides till ________ event occurs. |
| A. | purge. |
| B. | summarization. |
| C. | archieved. |
| D. | all of the above. |
| Answer» D. all of the above. | |
| 71. |
The dimension tables describe the _________. |
| A. | entities. |
| B. | facts. |
| C. | keys. |
| D. | units of measures. |
| Answer» B. facts. | |
| 72. |
The granularity of the fact is the _____ of detail at which it is recorded. |
| A. | transformation. |
| B. | summarization. |
| C. | level. |
| D. | tr |
| Answer» A. transformation. | |
| 73. |
Which of the following is not a primary grain in analytical modeling? |
| A. | Transaction. |
| B. | Periodic snapshot. |
| C. | Accumulating snapshot. |
| D. | All of the above. |
| Answer» B. Periodic snapshot. | |
| 74. |
Granularity is determined by ______. |
| A. | number of parts to a key. |
| B. | granularity of those parts. |
| C. | both A and B. |
| D. | none of the above. |
| Answer» C. both A and B. | |
| 75. |
___________ of data means that the attributes within a given entity are fully dependent on the entire primary key of the entity. |
| A. | Additivity. |
| B. | Granularity. |
| C. | Functional dependency. |
| D. | Dimensionality. |
| Answer» C. Functional dependency. | |
| 76. |
A fact is said to be fully additive if ___________. |
| A. | it is additive over every dimension of its dimensionality. |
| B. | additive over atleast one but not all of the dimensions. |
| C. | not additive over any dimension. |
| D. | None of the above. |
| Answer» A. it is additive over every dimension of its dimensionality. | |
| 77. |
A fact is said to be partially additive if ___________. |
| A. | it is additive over every dimension of its dimensionality. |
| B. | additive over atleast one but not all of the dimensions. |
| C. | not additive over any dimension. |
| D. | None of the above. |
| Answer» B. additive over atleast one but not all of the dimensions. | |
| 78. |
A fact is said to be non-additive if ___________. |
| A. | it is additive over every dimension of its dimensionality. |
| B. | additive over atleast one but not all of the dimensions. |
| C. | not additive over any dimension. |
| D. | None of the above. |
| Answer» C. not additive over any dimension. | |
| 79. |
Non-additive measures can often combined with additive measures to create new _________. |
| A. | additive measures. |
| B. | non-additive measures. |
| C. | partially additive. |
| D. | All of the above. |
| Answer» A. additive measures. | |
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