Based on the narratives, draw the following ERDs. Make sure you add the Primary Keys, Foreign...
Based on the narratives, draw the following ERDs. Make sure you add the Primary Keys, Foreign Keys, verbs that represent the relationship, and mark cardinality (both lower and upper bounds) for each diagram. Apply all 4 ERD rules. A new technology store is opening that specializes in smartphones. The owner wants to create her own database to track each smartphone she sells. Currently, she doesn’t plan to sell anything other than smartphones. For now, the owner only needs to keep track of each smartphone’s IMEI number, model, screen size, and price. She only keeps track of the customer’s first name, last name, and email address. She only keeps track of an order’s date. Create the entity-relationship diagram (ERD) that represents smartphones, customers, and orders.
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Based on the narratives, draw the following ERDs. Make sure you
add the Primary Keys, Foreign...
Create an ERD using Lucid Chart for the following description. Be sure to include all necessary...
Create an ERD using Lucid Chart for the following description. Be sure to include all necessary entities, attributes, and correct cardinality in relationships between entities. Don’t forget foreign keys. You have been asked to build a database for a technology company called TechNow. The company owner needs to keep track of the customers that buy their products, the employees that work at TechNow, the offices that the employees use, the vendors that provide them with products, and the products themselves....
The primary keys are underlined. The foreign keys are denoted by asterisks (*). Description of the...
The primary keys are underlined.
The foreign keys are denoted by asterisks (*).
Description of the schema:
• person — keeps track of the people who borrow books from the
library. The attributes contain personal and contact
information.
• author — keeps track of personal information about authors.
• publisher — keeps track of the publisher information. To keep it
simple, most of the attributes have been truncated in the sample
database. 1 trivial dependencies are things like X→X or...
This is about ERD. Question: The Gotham Buildings Department (GBD) is a city agency that tracks...
This is about ERD. Question: The Gotham Buildings Department (GBD) is a city agency that tracks all the buildings within a metropolitan area in the northeast United States. The GBD maintains data about the location, size, and construction date of each building. It also keeps track of specific renovations made to each building over time, and also demolition of a building, if that occurs. For each building, the GBD keeps data about the building's lot number, which is unique, the...
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...
Read, read and read and then think about that you can create perfectly an enhanced ERD...
Read, read and read and then think about that you can create perfectly an enhanced ERD for the following description. with making sure to include all kind of entities, attributes, and correct cardinality in relationships between entities. Never forget foreign keys. You need to build a database for the Good College. The College database administrator needs to keep track of the students that attend the College, the courses offered by the college, and the college employees. College tracks the first...
Create an Entity-Relationship Diagram (ERD). In the ERD include the following:
Create an Entity-Relationship Diagram (ERD).In the ERD include the following: entities primary keys for all entities attributes - use "good" names for attributes, use only single-valued attributes relationships - use Crow's foot or UML notation; name relationships that could be ambiguous cardinality - minimum (optional/mandatory) and maximum (one or many) on both ends of the relationship - use reasonable assumptions if there is insufficient information in the descriptionStudent/Course registration system for a universityStudents have a unique identification number, first name, middle initial, last name, year...
Database system QUESTION 5 Collector's Hub is a world renowned toy/memorabilia collectibles shop that was founded...
Database system
QUESTION 5 Collector's Hub is a world renowned toy/memorabilia collectibles shop that was founded in 1980. Collectors from all over the world would buy collectibles from this shop since it specializes in providing rare collectibles Collectibles such as movie memorabilia, statues, model kits, action figures and others are highly sought after by the collectors if it is rare and have a high appreciation value. The company has been managing its customers' order and sales by manual bookkeeping but,...
In this phase of the project you will create an ERD based upon the following requirements and bus...
In this phase of the project you will create an ERD based upon the following requirements and business rules. Limit your ERD to entities and relationships based on the business rules showed here. In other words, do not add realism to your design by expanding or refining the business rules. However, make sure you include all attributes needed that would permit the model to be successfully implemented, including all primary and foreign keys. 1. Trinity College (TC) is divided into...
Use the case study description and list of requirements below to create an entity-relationship diagram showing...
Use the case study description and list of requirements below to create an entity-relationship diagram showing the data requirements of the All You Need Are Toys Library database. Your ERD should be able to be implemented in a relational DBMS. Toy libraries operate in a manner similar to book libraries, with members able to borrow a toy for a number of weeks then return it. As with book libraries, toy libraries enable families to have access to a wider range...
Q1.a) Based on the business rules, you are expected to construct an Entity-Relationship (ER) diagram. The...
Q1.a) Based on the business rules, you are expected to construct
an Entity-Relationship (ER) diagram. The ER diagram should include
entities, attributes (if there are less than three specified in the
business statements, please add some extra attributes), identifiers
and corresponding data types, the relationships among entities with
cardinality and associative entities.
.b) Extend Q1.a) to apply generalization/specialization
technique to construct an Enhanced-ER (EER) diagram. The EER
diagram should specify the complete (total) and disjoint
(mutuallyexclusive) constraints on the
generalization/specialization....
The primary keys are underlined.
The foreign keys are denoted by asterisks (*).
Description of the schema:
• person — keeps track of the people who borrow books from the
library. The attributes contain personal and contact
information.
• author — keeps track of personal information about authors.
• publisher — keeps track of the publisher information. To keep it
simple, most of the attributes have been truncated in the sample
database. 1 trivial dependencies are things like X→X or...
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...
Database system
QUESTION 5 Collector's Hub is a world renowned toy/memorabilia collectibles shop that was founded in 1980. Collectors from all over the world would buy collectibles from this shop since it specializes in providing rare collectibles Collectibles such as movie memorabilia, statues, model kits, action figures and others are highly sought after by the collectors if it is rare and have a high appreciation value. The company has been managing its customers' order and sales by manual bookkeeping but,...
In this phase of the project you will create an ERD based upon the following requirements and business rules. Limit your ERD to entities and relationships based on the business rules showed here. In other words, do not add realism to your design by expanding or refining the business rules. However, make sure you include all attributes needed that would permit the model to be successfully implemented, including all primary and foreign keys. 1. Trinity College (TC) is divided into...
Q1.a) Based on the business rules, you are expected to construct
an Entity-Relationship (ER) diagram. The ER diagram should include
entities, attributes (if there are less than three specified in the
business statements, please add some extra attributes), identifiers
and corresponding data types, the relationships among entities with
cardinality and associative entities.
.b) Extend Q1.a) to apply generalization/specialization
technique to construct an Enhanced-ER (EER) diagram. The EER
diagram should specify the complete (total) and disjoint
(mutuallyexclusive) constraints on the
generalization/specialization....
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