A Star Schema is a schema Architectural structure used for creation and implementation of the Data Warehouse systems, where there is only one fact table and multiple dimension tables connected to it. A. a) write only. A. The Star Schema data model is the simplest type of Data Warehouse schema. Looking at the pharmaceutical sales example, facts are measurable data about the event. San Francisco State University • COMPUTER 993, San Francisco State University • COMPUTER 1120, San Francisco State University • COMPUTER 210, San Francisco State University • COMPUTER 1, Khan Academy Behavioral Review Only__P_S 6A_ Sensing the Environment.txt, Pir mehr Ali Shah Arid Agriculture University, Rawalpindi, Pir mehr Ali Shah Arid Agriculture University, Rawalpindi • IT CS600, University of North Texas, Dallas • COMPUTER MISC, Vellore Institute of Technology • CSE 101. The correct answer is: Organized around, important subject areas Question 8 Data in a data warehouse Select one: in a flat file format can be normalised, but often is not must be in normalised form to at least 3NF must be in normalised form to at least 2NF Feedback, Your answer is correct. 1 dimension with 20 attributes is good, 20 dimensions with 1 attribute each is not so good. Yahoo’s data and business intelligence architect, Rohit Chatter, answers the latest debate, Star versus Snowflake schema, by breaking down the differences, one aspect at a time. Dimension tables describe business entities—the things you model. 5. OLAP-Style Analysis With Self-Service Tools. Looking at the pharmaceutical sales example, facts are measurable data about the event. The biggest drawback of the level indicator in the classic star-schema is that it limits_____. 5. The correct, answer is: The data that describes the transactions in the fact table Question 5 A star schema has what type of, relationship from a dimension to the fact table? In computing, the star schema is the simplest style of mart schema and is the approach most widely used to develop data warehouses and interdimensional data marts. B. Snowflake schema. In star schema, Normalization is not used. Search Google: Answer: (c). The star schema consists of one or more fact tables referencing any number of dimension tables.The star schema is an important special case of the snowflake schema, and is more effective for handling simpler queries. The Star Schema Star schemas are organized into fact and dimension tables. B. Snowflake schema. Each dimension in a star schema is represented with only one-dimension table. For each star schema it is possible to construct fact constellation schema(for example by splitting the original star schema into more star schemes each of them describes facts on … One data warehouse schema model is a star schema. Tagged With: Tagged With: Data Warehouse MCQ Questions and Answers pdf, data warehousing mcq, dwh mcq, expansion for dss in dw is, is a good alternative to the star schema., mcq on data warehouse, wase dumps, wase mcq, wase question and answer, wase solution, wase solutions, wase wipro, wipro wase B. qualify. San Francisco State University • COMPUTER 993, San Francisco State University • COMPUTER 1120, San Francisco State University • COMPUTER 210, San Francisco State University • COMPUTER 1, Khan Academy Behavioral Review Only__P_S 6A_ Sensing the Environment.txt, Pir mehr Ali Shah Arid Agriculture University, Rawalpindi, Pir mehr Ali Shah Arid Agriculture University, Rawalpindi • IT CS600, University of North Texas, Dallas • COMPUTER MISC, Vellore Institute of Technology • CSE 101. Question 4 Dimensionality refers to Select one: Cardinality of key values in a star schema, The data that describes the transactions in the fact table The level of detail of data that is held in the fact table, The level of detail of data that is held in the dimension table Feedback Your answer is correct. Pages 323. Select one: Can be, updated by end users Contains only current data Contains numerous naming conventions and formats Organized, around important subject areas Feedback Your answer is correct. sales or support calls is surrounded and linked with other tables holding the dimensions of the fact table. The correct answer is: Decision, Support system Question 7 A data warehouse is described by which of the following? ..... is a subject-oriented, integrated, time-variant, nonvolatile collection or data in support of management decisions. Which operation mainly used to access the live data online and analyse it: a. This particular fact table has four main dimensions - Customer, Time, Product and Staff. The correct answer is: Data, Mining Question 6 Expansion for DSS in DW is Select one: Decisive Strategic System Data Support System, Data Store System Decision Support system Feedback Your answer is correct. 28. Star schema is a mature modeling approach widely adopted by relational data warehouses. 4. Star schema. consistency Segmentation Disambiguation Feedback Your answer is correct. Star Schema. Star schema. A directory of Objective Type Questions covering all the Computer Science subjects. Along the same lines the Star schema uses less foreign keys so the query execution time is limited. Course Hero is not sponsored or endorsed by any college or university. The correct answer is: Fact constellation. Dimension tables describe business entities—the things you model. The third differentiator in this Star schema vs Snowflake schema face-off is the performance of these models. C. Fact constellation. When a star schema has many dimension tables, data engineers might refer to it as a centipede schema. The correct answer is: Segmentation Question 3 _____ is a good alternative to the star schema. Most business intelligence data warehouses use what is called a dimensional model, where a basic fact table of data e.g. *XMLBeans from Apache is another good alternative and has very good XML Schema support. This preview shows page 60 - 62 out of 323 pages. Star schemas are the simplest and most widely used form of data warehouse schema, which makes them a good choice for data warehouses that aren’t overly complicated. _____ is a good alternative to the star schema. A Star Schema. A star schema depicts each dimension with only one-dimension table. 71) Data warehouse architecture is based on. D. Star-snowflake schema. Interestingly, the process of normalizing dimension tables is called snowflaking. Star schemas are the simplest and most popular way of organizing information within a data warehouse. c. 6. In this chapter, we will discuss the schemas used in a data warehouse. A) Data Mining B) Data Warehousing C) Document Mining D) Text Mining 3. B. Snowflake, schema. It requires modelers to classify their model tables as either dimension or fact. B. Snowflake schema. The fact table has the same dimensions as it does in the star schema example. For a limited time, find answers and explanations to over 1.2 million textbook exercises for FREE! Star Schema: Star schema is a multidimensional model type that uses simple queries in order to access data from the database. A. quantify. It takes less time for the execution of queries. B. qualify. Self-service BI tools use a different technology than … In computing, the star schema is the simplest style of mart schema and is the approach most widely used to develop data warehouses and interdimensional data marts. C. Fact constellation. Entities can include products, people, places, and concepts including time itself. b) read only. supports basic OLAP operations, including slice and dice, 73) The core of the multidimensional model is the. c. ... is a good alternative to the star schema. 69) Which of the following is not a component of a data warehouse? c. ... is a good alternative to the star schema. Feedback Your answer is correct. Star schema overview. While it takes more time than star schema for the execution of queries. The correct answer, is: Fact constellation. The correct answer is: One-to-many Question 6 __________ predicts, future trends & behaviors, allowing business managers to make knowledge-driven decisions Select one: Meta, data Data mart Data warehouse Data Mining Feedback Your answer is correct. Star schema uses more space. 22. C. Fact constellation. The biggest drawback of the level indicator in the classic star schema is that is limits ..... A) flexibility B) quantify C) qualify D) ability. This preview shows page 129 - 132 out of 323 pages. Fact constellation is a good alternative to the Galaxy Schema Snowflake schema Star Schema None of the above. Fact constellation is a good alternative to the a. Galaxy Schema b. Snowflake schema c. Star Schema d. None of the above Answer: (c).Star Schema View Answer Report Discuss Too Difficult! DBMS Objective type Questions and Answers. is a good alternative to the star schema A Star schema B Snowflake schema C. Is a good alternative to the star schema a star. The biggest drawback of the level indicator in the classic star schema is that is limits ..... A) flexibility B) quantify C) qualify D) ability. Fact constellation is a good alternative to the: a. Galaxy Schema: b. Snowflake schema: c. Star Schema: d. None of the above: View Answer Report Discuss Too Difficult! Star schema is a top-down model. c. 6. The fact table has the same dimensions as it does in the star schema example. 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