Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9781337627900
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 2, Problem 13P
Program Plan Intro
Given data:
The Crow’s Foot ERD for the relationship between STUDENT, PROFESSOR, and CLASS is given below. In the given model, the connectivity’s “1” is represented by a short line segment, and “M” is represented by the three-pronged crow’s foot and the relationship name “advises” and “teaches” is written above the relationship line.
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Considering the attached E-R diagram; provide SQL statements for the following cases:
Create above relations for the E-R diagram above
After creating each relation, insert at least 6 rows (tuples) for each relation (table) with data that you invented
SALE_ITEM relation should include at least two same SaleID
Update a “Price” value of a row in the ITEM relation
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The solution should include screenshots of your relations with data.
Discuss issues while solving the above problems and any assumptions that you made.
Question 1
Show the relationships between entities and use table bridges between entities if necessary.
Given the following relation vendor order (vendor no, order no, vendor name, qty supplied , price/unit) the second normal form relations are
Chapter 2 Solutions
Database Systems: Design, Implementation, & Management
Ch. 2 - Prob. 1RQCh. 2 - What is a business rule, and what is its purpose...Ch. 2 - How do you translate business rules into data...Ch. 2 - Prob. 4RQCh. 2 - Explain how the entity relationship (ER) model...Ch. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - Prob. 10RQ
Ch. 2 - What is a relationship, and what three types of...Ch. 2 - Give an example of each of the three types of...Ch. 2 - What is a table, and what role does it play in the...Ch. 2 - Prob. 14RQCh. 2 - Prob. 15RQCh. 2 - Prob. 16RQCh. 2 - Prob. 17RQCh. 2 - Prob. 18RQCh. 2 - Prob. 19RQCh. 2 - Prob. 21RQCh. 2 - Prob. 22RQCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Using Figure P2.6 as your guide, work Problems 68....Ch. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Typically, a hospital patient receives medications...Ch. 2 - Prob. 10PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17P
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- Create an Entity Relationship Diagram (ERD) of the normalized version of this table using Visio's crows-foot notation. The ERD should show the PK and FK columns, plus all of the appropriate column attributes (column name, data type/size, null/not null) plus the relationships (with minimum and maximum cardinality) between tables. Requirements: Show the results of the normalization as individual tables Show the FK and PK columns using Visio's notation You must solve the multi-column issue with grades (Hint: This will require a new column) Show the 3-part column definition as noted Show min/max cardinality Tables are attachedarrow_forwardDo the tables in figure 1entity exhibit entity integrity? Why or why not?arrow_forwardConsidering the un-normalized relational table PROJECT below: PROJECT (ProjectTitle, EmpeName, ManagerName, Location, HoursWork, ManagerPhone) The attributes of PROJECT table satisfy the following properties: Each project has many employees, Each employee may involve in one or more projects, Projects are managed by managers; there are many managers in the company, hence a project may be assigned to any one of the managers, but each manager manages only one project. Each project is located in a specific location, The number of hours an employee works at each project is determined by a project title and the name of an employee. Each manager has a telephone number. Normalize the relational table PROJECT into a minimal number of relational tables in BCNF. Use the functional dependencies to prove that each one of the relational tables obtained from the decomposition of the original table is in BCNF.arrow_forward
- Considering the un-normalized relational table PROJECT below: PROJECT (Project Title, EmpeName, ManagerName, Location, Hours Work, ManagerPhone) The attributes of PROJECT table satisfy the following properties: Each project has many employees, Each employee may involve in one or more projects, Projects are managed by managers; there are many managers in the company, hence a project may be assigned to any one of the managers, but each manager manages only one project. Each project is located in a specific location, The number of hours an employee works at each project is determined by a project title and the name of an employee. Each manager has a telephone number. Normalize the relational table PROJECT into a minimal number of relational tables in BCNF. Use the functional dependencies to prove that each one of the relational tables obtained from the decomposition of the original table is in BCNF.arrow_forwarda. What characteristics do tables that conform to the concept of well-informed relations have? b. Describe a dependency diagram and explain its purpose c. Normalize the relation given below OrderNum OrderDate PartNumber PartName UnitPrice PartQuantity SupplierNumber SupplierName SupllierStreet SupplierCitr SupplierSate SupplierZiparrow_forwardPLZ help with the following: Consider the following relations: Suppliers (Snumber, sname, address) Parts (Pnumber, pname, color) Catalog (Snumber, Pnumber, Qty) Find the suppliers names who supply the part number 7with quantity greater than 50. Select one: a. πSname(σPnumber=7 (Parts)) b. πSname(σPnumber=7 and Qty>50 (Catalog)) c. None of the above d. πsname(σPnumber=7 and Qty>50 (Catalog) (Parts))arrow_forward
- I NEED ONLY ENTITY RELATIONSHIP & RELATIONAL DIAGRAM.arrow_forwardwhich rules apply to desigining table with less redundancy? a) Binary Relationship b) Reflective Relationship c) Weak entity d) Normal formarrow_forward2. List all functional dependencies satisfied by the relation shown in the figure. Q 1 3 4 2 4 5 1 3 4 2 4arrow_forward
- What is used to indicate a weak relationship in an ERD in Crow’s Foot notation? Dashed line between entities Double rectangular box Solid line between entities Single rectangular boxarrow_forwardConsider the following primary key underlined project (PNO PName, Duration, Cost) Staff (SNO, SName) Assigned to (PNG, SNO) write The relational algebra for the following 1. Find the project Names of projects assigned to Ahmed. 2. find project mames of projects not assigned to any Staff 3. find names of employee working on all projects. 4. Find numbers of Staff members who do not work on project number DB 2022 least all of the projects that 5. Find The Staff members who work on at Staff 107 works on.arrow_forwardDo the tables in figure 1 exhibit entity referential integrity? Why or why not?arrow_forward
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