Define and describe the significance of the following data warehousing keywords: ETL, OLAP, Dimension, Fact, Schema, Snowflake, Star Schema, and Data Mart.
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A: Data virtualization is a concept within the realm of data warehousing.Its purpose is to enable…
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A: The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the…
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A: Data virtualization is a technology that streamlines data access and management from various…
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Define and describe the significance of the following data warehousing keywords: ETL, OLAP, Dimension, Fact, Schema, Snowflake, Star Schema, and Data Mart.
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- In the hierarchy of data, what is the difference between a data attribute and a data item? What is the domain of an attribute?Explain the potential risks associated with two-way data binding.Subject: Database Design UCSICafe is a coffee shop which set up in many countries such as Malaysia, Australia and New Zealand. UCSICafe has many employees, and these employees work for a department (headquarter or branches) which located in a country. For example, Michael Lee works as a finance manager in finance department which is located in Melbourne, Australia and Melbourne is the headquarter Important NoteYou are required to:1. use crow-foot notation in drawing entity relationship diagram; 2. include constraints and descriptions/assumption in your answer.
- Question 3: ERD design Although you always wanted to be a dog trainer, you ended up being an expert on databases because you love to work with data and logic. Your old love is still there, however, so you set up a database company, DogTraining, that builds a product for dog kennels. The core of this product is a database with a schema that captures all the information that kennels need to maintain. Kennels keep information about dog trainers, the First and Last names of the dog trainers (which are unique), birthplace, color of the dog trainers hair, and style of training. For each dog, the trainer, the date the dog was born, a name (not unique), the type of dog (e.g., Brittany, German Shepard, Collie, etc.), color of the dog’s hair, and how much weighs must be stored. Dogs are also classified into groups of various kinds, for example, hunting, guard, working; a given dog may belong to more than one group. Each group is identified by a name (like those just given) that describes the…Assignment Brief: Some of the most difficult decisions that you face as a database developer are what tables to create and what columns to place in each table, as well as how to relate the tables that you create. Normalization is the process of applying a series of rules to ensure that your database achieves optimal structure. Normal forms are a progression of these rules. Each successive normal form achieves a better database design than the previous form did. Based on your understanding for the various normal form respond to the following problems and provide the optimal answer/solution. Problem#1: 1st Normal Form (1NF) Consider the Students table, with the primary key underlined, and the following data: Students: Alpha 100111 Email doe@usna.edu Name Courses GradePoints NN204, SI204, IT221 SM223, EE301 SI204 John Doe 2,3,3 Matt Smith 092244 113221 smith@usna.edu black@usna.edu 4,4 Melinda 3 Black NN204, SI204, IT221 090112 Tom Johnson Johnson@usna.ed 4,2,3 u a) Is the Students table…Explain the concept of data warehousing schemas, including star schemas, snowflake schemas, and galaxy schemas.
- Describe the data modeling techniques commonly used in data warehousing, such as star schema and snowflake schema.Subject: Database Topic: EERD -Based on the information given below, draw the conceptual EERD where you should include the enhanced features. [Using UML Design] You are required to design a database for a car championship. The requirements are as follows: In the championship, each car’s information such as the car model, the top speed and the acceleration will be stored, and it is identifiable through a unique car ID. Each car will be drove by only one driver. Each driver’s info such as the unique driver number, driver name and the experience level of the driver are stored as well. A driver may have many trainers from more experience drivers and these experience drivers would have at least one trainee who follow them. Each of these drivers are usually supported by a team which each team have a name and is identifiable through the team number. Usually, a team would have at least one driver in the race. Every race would have a specific race ID and a race name. In a race would consists of…Physical data independence is the capacity to change the internal schema without having to change the conceptual schema or external schema. Select one: True False
- Describe the concept of "star schema" and "snowflake schema" in data warehousing.Database Design This assignment contains two questions. 1. Draw and ER diagram that reflects the following elicited data requirements. The ER diagram must be drawn using word and abiding to the ER notation presented in the lectures\book. In this question you are asked to only create a diagram. You are not asked to convert to tables You are asked to create a database for a busing company. You need to keep track of the differ- ent buses, each having a plate number, make year, and number of seats. You also need to keep track of drivers that work in the company. The information kept on each driver should include the license number, age, and name. Finally, you need to keep information on which drivers are allowed to drive different buses. Drivers cannot drive any bus, but rather each driver is assigned with specific buses in the fleet he/she is allowed to drive. Accordingly, a driver may be allowed drive many different buses, and a bus can be driven by many different drivers. 2. Convert the…8.When constructing a database, the designer mustknow what types of relationships exist betweenrecords in different data sets, such as one-to-many or many-to-many. Give three examplesfor each of these relationships.