Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 27RQ
What would be the conceptual view of the INDEX table described in Question 26? Depict the contents of the conceptual INDEX table.
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Draw an Entity Relationship Diagram (ERD) based on the flat files that have been supplied. Your ERD must incorporate all the entities and attributes supplied, as well as establishing the relationships between the entities
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Why do we need to have a point of view in the first place? What do you mean
when you say that you have a point of view? There are times when
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Chapter 3 Solutions
Database Systems: Design, Implementation, & Management
Ch. 3 - What is the difference between a database and a...Ch. 3 - Prob. 2RQCh. 3 - Prob. 3RQCh. 3 - What are the requirements that two relations must...Ch. 3 - Which relational algebra operators can be applied...Ch. 3 - Explain why the data dictionary is sometimes...Ch. 3 - A database user manually notes that The file...Ch. 3 - Prob. 8RQCh. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
Ch. 3 - Prob. 11RQCh. 3 - Prob. 12RQCh. 3 - Use Figure Q3.13 to answer Questions 1317. FIGURE...Ch. 3 - Create the table that results from applying a...Ch. 3 - Write the relational algebra formula to apply an...Ch. 3 - Create the table that results from applying an...Ch. 3 - Using the tables in Figure Q3.13, create the table...Ch. 3 - Prob. 18RQCh. 3 - Prob. 19RQCh. 3 - Prob. 20RQCh. 3 - Identify and describe the components of the table...Ch. 3 - Identify the primary keys. FIGURE Q3.22 THE...Ch. 3 - Identify the foreign keys. FIGURE Q3.22 THE...Ch. 3 - Create the ERM. FIGURE Q3.22 THE CH03_THEATER...Ch. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 26RQCh. 3 - What would be the conceptual view of the INDEX...Ch. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Describe the type(s) of relationship(s) between...Ch. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 10PCh. 3 - Prob. 11PCh. 3 - Create the relational diagram to show the...Ch. 3 - Prob. 13PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - For each table, identify the primary key and the...Ch. 3 - Prob. 18PCh. 3 - Do the tables exhibit referential integrity?...Ch. 3 - Identify the TRUCK tables candidate key(s). FIGURE...Ch. 3 - For each table, identify a superkey and a...Ch. 3 - Prob. 22PCh. 3 - Prob. 23PCh. 3 - Prob. 24PCh. 3 - Create the ERD. (Hint: Look at the table contents....Ch. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Create the table that would result from applying...Ch. 3 - Create the table that would result from applying...Ch. 3 - Create the table that would result from applying a...
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- The ______________ model is a simple but highly useful way to organize data into collections of two-dimensional tables called relations.arrow_forwardDiscuss the concept of denormalization in database design. When is denormalization appropriate, and what are the potential trade-offs and performance implications?arrow_forwardWhat is the definition of a point of view? What is the definition of a view? Is it ever the case that the data stated in a view definition appears in the type given in the description of the view? What happens when someone enters data into a database using a view?arrow_forward
- Discuss the benefits of Second Normal Form (2NF) and Third Normal Form (3NF) in database design.arrow_forwardDiscuss the concept of denormalization in database design. When and why would you denormalize a database, and what are the potential trade-offs?arrow_forwardDiscuss the concept of normalization in database design. Why is it important, and what are the normal forms up to 3NF?arrow_forward
- Write down the all views of 4+1 View Model with the purpose, stakeholders and wayof representation of each viewsarrow_forwardA data model is a collection of data description constructs. The main purpose of a data modeling is to assist in the understanding of the meaning (semantics) of the data and facilitate communication about the information requirements. Discuss FIVE (5) evaluation criteria for a good data model. [Hint: As a database designer, you have to interview customers, you are required to include questions you may ask to customers in your answers]arrow_forwardTasks: Considering the following E-R diagram, you need to translate it into a relational database and add some data to the tables. a) Write SQL statements to create the corresponding relations and capture as many of the participation and cardinality constraints as possible. Make sure that the data type and size for each attribute are appropriate. b) If some constraints in the diagram cannot be captured, explain why. c) Write SQL statements to insert at least two tuples for each table task name number ssn phone administrators O deptName dob Employees Caddresses salary staff's hourlySalary number M name Places N Orders M Contains N Items description P status number ID expShipDate qty deliveryDate name qtyInStock CunitCost actualShipDate salePrice email Street Customers city Addres statearrow_forward
- Create a diagram for a database with at least 5 tables. This should show your table names and column names. Show the relationships between the tables. Write a statement explaining your database design (why did you use the tables that you did). Create a database in Access based on your diagram. Include all tables in your diagram. Tables should each have a minimum of 5 rows. Create 5 SQL statements using your database. At least 2 of these should be manipulation statements (insert, update, etc). The others should be select statements. Explain what your sql statements do and how they would be useful to your database.arrow_forwardCreate an ER model related to the following entities and relationships: Department, Student, Professor, Course, Section, Grade, Major. (For attributes inside each table, you only need to insert several reasonable attributes. No need to have a comprehensive list. For many-to-many relationship, you also need to insert one extra table to handle the many-to-many relationship. The final database design will have more tables than the number of entities listed above.) A given department can offer many courses. A given course can be offered by only one related department. A given course can have many related sections. A given professor can teach many sections. A given section can only be related to one course and taught by one professor. A given professor can have appointment with different departments A given department can have many professors. A given department can offer several majors. A given major can be offered by only one related department. A given student can have several majors. A…arrow_forwardWhat is a point of view? How is a view defined? Does the data defined in a view specification ever appear in the type described in the description? What occurs when a person uses a view to enter a database?arrow_forward
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