Give an example of three entities that might exist in a database for a medical office, and list some attributes that would be stored in a table for each entity.

Q: Which ones are super keys for course? (a) course id (b) course id, title (c) course id, title,…

A: The attributes “course_id” and “title” can be used to identify the rows of “course” table uniquely.…

Q: Create an E-R model for the following scenario. Show entity names, primary keys, attributes for each…

A: We need to create ER diagram for above case studies See below step for diagram.

Q: Consider the following relations for a database that keeps track of student enrollment in courses…

A: A relational database is a type of database that keep data and access points that are related to…

Q: Why do you believe database design requires the use of entity relationship (ER) diagrams?

A: An entity Relationship Diagram (ERD) visual represents a database's conceptual, graphical, and…

Q: Draw a customer-input screen for a utility company. What information should be captured? In what…

A: Solution ::   Some involve advances in basic hidden (under) display and interface technologies…

Q: Based on Figure 1.0, draw a DataBase Model of your choice then explain how this model relate to…

A: Below i have shown:

Q: How should data about customer contact details and data about their orders be stored in a database?…

A: Here customer is an entity since it has its own attribute.  Now order can be considered as one more…

Q: Create an enhanced entity-relationship with ERD below, complete with PARTICIPATION and DISJOINT…

A: Enhanced ER model: (EER) diagrams are advanced versions of ER diagram.It is used in designing…

Q: The crow's foot in a diagram a.) is only used to show N:M relationships. b.) shows the relationship…

A: Crow's foot Diagram contains crow foot notation in which the cardinality and modality of the…

Q: Describe an entity, an entity type, and an entity set in a database management system?

A: Entity: The entity is an object, place, or thing which has its independent existence in the real…

Q: what is the name of the connection in which each instance of data in one entity is represented by…

A: Entities are real-world objects with characteristics that are stored in a database. Tables are used…

Q: What type of relationship in the conceptual model is converted to an entity in the logical database…

A: Conceptual ERD models the business objects that should exist in a system and the relationships…

Q: Consider the E-R diagram for a university database as shown in Figure 1. What is NOT true about…

A: Each instructor must have to be associated with atleast one associated department. Hence, correct…

Q: Give an example of a database management system for each of the systems listed above in your…

A: A computerized data-keeping system is all that a database management system (or DBMS) really is,…

Q: What is the definition of an Entity set?

A: Answer An entity set is a logical container for instances of an entity type and instances of any…

Q: Using your own understanding of how a typical small retail shop operates, create a database  Entity…

A: Generally In a small retail shop operates a customer  order a particular product  and he/she pay for…

Q: Task 2 Using the scenario, produce Design Documentation for Plug-Ins Electronics. Your database…

A: Er diagram or entity relationship diagram gives a brief lookout for all the entities present in a…

Q: Consider the following Scenario. Design a database for an airline. The database must keep track of…

A: The ask is to design a database for an airline, keeping track of customers and their reservations,…

Q: Assume that you have to design a databaseto manage books issued by your universitylibrary.…

A: Primary key column has unique data. It uniquely identifies record in a relational database table.…

Q: How is a relationship between entities indicated in an ERD? Give an example using the Crow’s Foot…

A: Relationship Representation in ERD(Entity Relationship Diagram):-   ER diagram or Entity…

Q: What is the database's Entity Relationship Diagram Compressed?

A: Will be explained :

Q: Consider the following relations for a database that keeps track of student enrollment in courses…

A: The answer has given below :

Q: Describe the Entity-Relationship model and its role in a database.

A: In this question we have to understand Entity Relationship model in database. Lets understand the…

Q: Explain how the entity relationship (ER) model helped produce a more structured relational database…

A:

Q: Create the Entity Relationship (ER) Diagram for the following scenario. We want to maintain a…

A: ER Diagram: The entity relationship diagram represents the various entities and the relationship…

Q: A simple(Atomic) attribute is Select one: O a. an attribute that can be devided to smaller sub parts…

A: A simple (atomic) attribute is__________?

Q: What is The Compressed form of Entity Relationship Diagram in Database?

A: This question wants compressed form of a term in database.

Q: Design a database for an airline-system. The database must keep track of customers and their…

A: Create a flight database. The website should keep track of customers and their bookings, flights and…

Q: Assume two students wish to enrol in the same course, but there is only space for one additional.…

A: Intro in the database, we have a concept of locks where when we try to update a record we need to…

Q: An entity-relationship diagram (ERD) is a specialized graphic that illustrates the relationships…

A: The solution for the above given question is given below:

Q: In a relational database, as shown by the examples, how can there be such relationships?

A: Relational Database: A relational database is a form of database that stores and makes data…

Q: Why do you think entity relationship (ER) diagrams are important in database design?

A: Justification: An entity is a kind of data item or component. In an ER diagram, an entity is…

Q: Using Crow’s foot notation, draw an ER diagram of the conceptual schema for another part of a…

A: Answer is given below-

Q: describes a connection in which each instance of data in one entity is represented by just one…

A: There are three types of relationships that can be represented between entities and are as follows:…

Q: Consider the following ER model, A) describe the database entities, attributes, relationships and…

A: Here, I have to provide a solution to the above question.

Q: Consider the E-R diagram for a university database as shown in Figure 1. What is NOT true about…

A: Explanation: From the E-R diagram, one can identify that instructor and student are related to each…

Q: Describe different types of constraints that we can consider when we define the database schema

A: Constraints are the laws that a table's data columns must follow. These are used to restrict the…

Q: Convert the following ER diagram into a relational database schema, be certain to indicate primary…

A:

Q: A hospital consists of various specialized wards where each ward has its unique ID, name and…

A: Question given:  Entity - Relationship Diagram for Hospital Management System Entity - Patient,…

Q: just answer true/false. a] There are three main components of ER model which are an entity, an…

A: Defined the given statements true or false

Q: Describes a relationship in which each instance of data in one entity is represented by only one…

A: The following are the three types of relationships that exist between entities: One-One…

Q: Consider the E-R diagram for a university database as shown in Figure 1. What is true about grade?…

A: “grade” represents an entity associated with the relationship “takes” in the given…

Q: Convert the following ER diagram into a relational database schema, be certain to indicate primary…

A: Answer : The Relational  model  of the above scenario is as shown in below :

Q: We would like to design a database to maintain information about COURSES in a Faculty. Each COURSE…

A: A unary(recursive) Relationship :- when there is one entity set participating in a relationship and…

Q: Transform the ERD below to a database design. Identify the primary keys and foreign keys. Answer…

A: Solution ::    Business rules refer to types of constraints that are present among different…

Q: Consider the E-R diagram for a university database as shown in Figure 1. What is the primary key for…

A: Primary key In the diagram, the primary key for class room is building and room_number. A primary…

Q: Giving the following schema create an ER diagram for this Supermarket database, and show the primary…

A: Entity Relationship Diagram : An entity relationship diagram (ERD), also known as an entity…

Q: Using the scenario, produce Design Documentation for Plug-Ins Electronics. Your database design…

A: ER Diagram abbrivation for Entity Relationship Diagram, also known as ERD is a databse diagram…

Transaction Processing

Transaction processing is a computational style generally performed by server computers, which supports interactive applications (apps). Transaction processing is also known as information processing, which divides the work into indivisible and individual operations called transactions. The transaction is a set of tasks; a single task is considered as the minimum processing unit that cannot be divided again.