CS614-Midterm
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Which statement is true for De-Normalization?
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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 _______.
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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.
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Focusing on data warehouse delivery only often end up _________.
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The need to synchronize data upon update is called
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_________ breaks a table into multiple tables based upon common column values.
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Multidimensional databases typically use proprietary __________ format to store pre-summarized cube structures.
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Data Warehouse provides the best support for analysis while OLAP carries out the _________ task.
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Rearranging the grouping of source data, delivering it to the destination database, and ensuring the quality of data are crucial to the process of loading the data warehouse. Data ____________ is vitally important to the overall health of a warehouse project. 1. Cleansing 2. Cleaning 3. Scrubbing Which of the following options is true?
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: An optimized structure which is built primarily for retrieval, with update being only a secondary consideration is
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____________ in agriculture extension is that pest population beyond which the benefit of spraying outweighs its cost.
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To identify the __________________ required we need to perform data profiling
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A dense index, if fits into memory, costs only ______ disk I/O access to locate a record by given key.
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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.
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De-Normalization normally speeds up
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Data mining uses _________ algorithms to discover patterns and regularities in data.
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A data warehouse implementation without an OLAP tool is always possible.
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It is observed that every year the amount of data recorded in anorganization is
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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.
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Naturally Evolving architecture occurred when an organization had a _______ approach to handling the whole process of hardware and software architecture.
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The Kimball s iterative data warehouse development approach drew on decades of experience to develop the _________.
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In _________ system, the contents change with time. :
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As apposed to the out come of classification, estimation deal with ____________ valued outcome.
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The goal of ______is to look at as few block as possible to find the matching records.
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The growth of master files and magnetic tapes exploded around the mid- _______. :
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Taken jointly, the extract programs or naturally evolving systems formed a spider web, also known as
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For a given data set, to get a global view in un-supervised learning we use
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Node of a B-Tree is stored in memory block and traversing a B-Tree involves ______ page faults.
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Grain is the ________ level of data stored in the warehouse.
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The technique that is used to perform these feats in data mining modeling, and this act of model building is something that people have been doing for long time, certainly before the _______ of computers or data mining technology.
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NUMA stands for __________
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Analytical processing uses ____________ , instead of record level access.
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The degree of similarity between two records, often measured by a numerical value between _______, usually depends on application characteristics.
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The input to the data warehouse can come from OLTP or transactional system but not from other third party database.
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DOLAP allows download of “cube” structures to a desktop platform with the need for shared relational or cube server.
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Suppose the amount of data recorded in an organization is doubled every year. This increase is __________ .
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There are many variants of the traditional nested-loop join. If the index is built as part of the query plan and subsequently dropped, it is called
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The purpose of the House of Quality technique is to reduce ______ types of risk.
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5 million bales.
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DTS allows us to connect through any data source or destination that is supported by ____________
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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.
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Change Data Capture is one of the challenging technical issues in _____________
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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 ___________
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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:
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_______ is an application of information and data.
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50 / 50
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.
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