Homework Answers
Add Answer to:
Exercise 9.13 For the following scenario, draw an ER Diagram. Identify attributes of each entity For...
Identify the Entities and Attributes and Draw the ER diagram. 1. Consider a mail order database...
Identify the Entities and Attributes and Draw the ER diagram. 1. Consider a mail order database in which employees take orders for parts from customers. The data requirements are summarized as follows: The mail order company has employees identified by a unique employee number, their first and last names, and a zip code where they are located Customers of the company are uniquely identified by a customer number. In addition, their first and last names and a zip code where...
Draw ER diagram and identify and underline the primary key for the following exercise A university...
Draw ER diagram and identify and underline the primary key for the following exercise A university has a large number of courses in its catalog. Attributes of courses include CRS_NO, CRS_NAME, and UNITS. Each course has other courses as prerequisites.
Identify all entity types, attributes, relationship types and their degrees in the following case Hence draw...
Identify all entity types, attributes, relationship types and their degrees in the following case Hence draw an entity-relationship diagram An organization makes many models of cars where a model is characterized by a name and a suffix (such as GL or XL which indicates the degree of luxury) and an engine size. Each model is made up from many parts and each part may be used in the manufacture of more than one model. Each part has a description and...
1. Please answer the following questions. You need to draw ER diagrams using any free tools...
1. Please answer the following questions. You need to draw ER diagrams using any free tools discussed in the class or you may draw using pencil and paper. Please identify the entities and relationships between them. For each entity, please identify the attributes each entity has. For each attribute, please identify whether this attribute is optional or required, single valued or multi-valued, simple or composite, stored or derived. Define a key (identifier) for each entity. Note that a key can...
Database 1. Draw an Entity-Relationship diagram(including cardinality ratio and participa- tion constraint) to represent the following...
Database
1. Draw an Entity-Relationship diagram(including cardinality ratio and participa- tion constraint) to represent the following application: A DEPARTMENT has a number of TEACHERS and each TEACHER is affil- iated only with one DEPARTMENT; A STUDENT has only one TEACHER as an advisor, but a TEACHER can advise many STUDENT; on the other hand, TEACHER instructs many STUDENTS, and a STUDENT has a number of instructors. Different AGENCIES support different TEACHERS for various PROJECTS. (15 points) A trucking company is...
Question 3 (a) Draw an ER diagram in term of entity, attribute and relationship for a...
Question 3 (a) Draw an ER diagram in term of entity, attribute and relationship for a SMART FOOD VENTURE proposal. [14 marks] (b) Identify the relational keys are Superkey, candidate key, primary key, alternate key and foreign key. Describe each of them with reference to the sample database tables that you had created. [6 marks] SMART FOOD VENTURE NETWORKING SDN BHD 4-Nov-09 e PASAR Introduction: SMART FOOD VENTURE is a wholesale company supplying meat-chicken that mainly concentrates around Manjung and...
Develop an entity relationship diagram relating the following entities: CUSTOMERDATA. ORDER, ORDERITEM, INVENTORY, REFUNDDATA, SHIPMENTINFO Add...
Develop an entity relationship diagram relating the following entities: CUSTOMERDATA. ORDER, ORDERITEM, INVENTORY, REFUNDDATA, SHIPMENTINFO Add a primary key and one attribute to each entity. Use Crow’s Feet notation. Each customer in CUSTOMERDATA entity places zero to many orders in ORDER entity. Each order in ORDER entity belongs to exactly one customer. Each order in ORDER entity must consist of at least one item and can contain many orderitems. Each order item is in exactly one order in ORDER entity....
c) Write an ER Diagram for the following Library database. Identify all the Entities, Relationships and Attributes. Underline the primary keys and mark the different constraints. You can add an I att...
c) Write an ER Diagram for the following Library database. Identify all the Entities, Relationships and Attributes. Underline the primary keys and mark the different constraints. You can add an I attribute as a primary key for an entity to make t unique if necessary. Library has a number of branches in the city, each branch having a name, address and librarian. Books have title, authors and publisher. A book can have multiple authors but a single publisher. Note that same...
The following are the main entity types of the academic institution database. For each entity type,...
The following are the main entity types of the academic institution database. For each entity type, we provide some of the corresponding attributes. Use this information in order to: (a) Build an Enhanced E-R diagram; (b) Transform the Enhanced E-R diagram to a relational database. Identify the primary key(s) and the foreign key(s) for each relation. Draw the relational integrality constraints; (c) For each of the relations created, indicate its normal form. If the relation is not in the 3NF,...
Entity relationship diagram (ERD) question: An online food delivery company hires you to design a small...
Entity relationship diagram (ERD) question: An online food delivery company hires you to design a small database to store information about the online orders. You’re given the following requirements: ⚫ A customer is uniquely identified by his/her email. For each customer, we also record his/her name, phone number and address. The address is composed of suburb and street. ⚫ A rider is uniquely identified by his/her ID. We will keep record of the rider’s age, gender, phone number and available...
Identify the Entities and Attributes and Draw the ER diagram. 1. Consider a mail order database in which employees take orders for parts from customers. The data requirements are summarized as follows: The mail order company has employees identified by a unique employee number, their first and last names, and a zip code where they are located Customers of the company are uniquely identified by a customer number. In addition, their first and last names and a zip code where...
Identify all entity types, attributes, relationship types and their degrees in the following case Hence draw an entity-relationship diagram An organization makes many models of cars where a model is characterized by a name and a suffix (such as GL or XL which indicates the degree of luxury) and an engine size. Each model is made up from many parts and each part may be used in the manufacture of more than one model. Each part has a description and...
Database
1. Draw an Entity-Relationship diagram(including cardinality ratio and participa- tion constraint) to represent the following application: A DEPARTMENT has a number of TEACHERS and each TEACHER is affil- iated only with one DEPARTMENT; A STUDENT has only one TEACHER as an advisor, but a TEACHER can advise many STUDENT; on the other hand, TEACHER instructs many STUDENTS, and a STUDENT has a number of instructors. Different AGENCIES support different TEACHERS for various PROJECTS. (15 points) A trucking company is...
Question 3 (a) Draw an ER diagram in term of entity, attribute and relationship for a SMART FOOD VENTURE proposal. [14 marks] (b) Identify the relational keys are Superkey, candidate key, primary key, alternate key and foreign key. Describe each of them with reference to the sample database tables that you had created. [6 marks] SMART FOOD VENTURE NETWORKING SDN BHD 4-Nov-09 e PASAR Introduction: SMART FOOD VENTURE is a wholesale company supplying meat-chicken that mainly concentrates around Manjung and...
c) Write an ER Diagram for the following Library database. Identify all the Entities, Relationships and Attributes. Underline the primary keys and mark the different constraints. You can add an I attribute as a primary key for an entity to make t unique if necessary. Library has a number of branches in the city, each branch having a name, address and librarian. Books have title, authors and publisher. A book can have multiple authors but a single publisher. Note that same...
Most questions answered within 3 hours.
-
Show the rearrangements of the carbon skeleton in the following
carbocations. Note that in some cases...
asked 1 hour ago -
Use a z -Table to find the specified area.
Between the mean and 3.01 deviations from...
asked 1 hour ago -
Consider the following reaction at equilibrium. What will happen
if O2 is added to the reaction?...
asked 2 hours ago -
Based on how much or how little you have noticed in the media,
do you think...
asked 5 hours ago -
I calculate Rosetta Stone’s P/E ratio as 10x prior to a report
about future industry growth....
asked 6 hours ago -
What major physiological changes account for electrodermal
activity (as in during a lie-detector test)?
asked 7 hours ago -
You are going to sell fruits & vegetables at a local
roadside market. List separately and...
asked 8 hours ago -
Hows does water affect the digestion of fats ?
asked 10 hours ago -
A buffer that contains 0.41 M of a base, B and 0.21 M of its
conjugate...
asked 10 hours ago -
Pleaaaaaaaasssssse help me please please it's more important
:((((((((((((((((((((
CASE STUDY
Nissan Company
Nissan Motor Company,...
asked 10 hours ago -
Calculate the concentration of hydronium and hyroxide ions in 1)
2.0 mol/L HNO3 2) 0.5 mol/L...
asked 10 hours ago -
In a loop-the-loop ride a car goes around a vertical, circular
loop at a constant speed....
asked 10 hours ago