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You Are On Multi Choice Question Bank SET 918

45901. Business Intelligence (BI) systems fall into two broad categories: reporting and data warehousing.



45902. Most operational databases can be used for many BI applications.



45903. The data warehouse DBMS needs to be the same DBMS used for the operational database.



45904. RFM analysis is a BI reporting system.



45905. In a common form of RFM analysis, customers are sorted in five groups and given a score of 1 to 5 depending on their group.



45906. Report types include static, dynamic, query and OLAP.



45907. OLAP uses measures, dimensions and associations.



45908. In unsupervised data mining, explanations are created after patterns are found.



45909. The delivery function of a report management system allows reports to be delivered via e-mail, via the Web, via XML Web services, via hand delivery and other delivery means.



45910. BI reporting systems summarize the current status of business activities in order to predict future activities.



45911. Business Intelligence (BI) reporting systems are used to make sophisticated mathematical and statistical calculations in order to prepare reports based on the data.



45912. The term neural networks as used in data mining is a misnomer.



45913. Formatting the report is part of authoring a report.



45914. Market basket analysis primarily uses the technique of conditional probabilities.



45915. A data mart is a collection of data that, while smaller than a data warehouse, still addresses the entire business.



45916. OnLine Analytical Processing (OLAP) is a BI reporting system.



45917. Data warehouse data are usually normalized.



45918. A BI reporting system does not ________ .





45919. Which of the following are not done by Business Intelligence (BI) systems?





45920. Business Intelligence (BI) systems do not obtain their data by which of the following means?





45921. The "curse of dimensionality" relates to which problem of using operational data for BI reporting?





45922. A report generated by a reporting system is delivered to the appropriate users via a user-accessed Web site. This system uses which of the following report modes?





45923. The rate at which work is done,is measured in terms of:





45924. The volume of air contained above the piston when the piston is at TDC is:





45925. The condition of exploding the end charge before the completion of normal combustion is:





45926. Low Cetane fuel implies that:





45927. Mechanical fuel pumps are operated by:





45928. Before any changes to database structure are attempted one should first:





45929. Which of the following modifications may not succeed?





45930. How can you find rows that do not match some specified condition?





45931. A regular subquery can be processed:





45932. What SQL command can be used to add columns to a table?





45933. The EXISTS keyword will be true if:





45934. Changing cardinalities in a database is:





45935. The NOT EXISTS keyword will be true if:





45936. The data model that is produced from reverse engineering is:





45937. To drop a column that is used as a foreign key, first:





45938. What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0?





45939. Which is not true of a correlated subquery?





45940. A tool that can help designers understand the dependencies of database structures is a:





45941. How many copies of the database schema are typically used in the redesign process?





45942. Because of the importance of making data model changes correctly, many professionals are ________ about using an automated process for database redesign.





45943. A correlated subquery is processed as a nested subquery.



45944. A regular subquery is processed from the bottom up.



45945. Correlated subqueries are similar to a regular subquery.



45946. Database redesign is especially difficult if the database has no data.



45947. Some organizations take the stand that no application should ever employ the true name of a table.



45948. The use of the double NOT EXISTS can be used to find rows that do not match some specified condition.



45949. Although creating test databases is a critical and necessary job, there are few career opportunities in this area.



45950. Because of the need for extensive knowledge of SQL, many database developers choose to automate the redesign process.



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