Design a logical ERD for the following case study. Use the Crow's Foot notations in your designed ERD. Case study: • Acme Pty Ltd is made up of a number of departments that manage none or more projects. Each project belongs to a department. • Each department employs a number of employees. Each employee works in one department. • A team of employees work on each project. Some employees may not be assigned to any project yet and a new project may not have any team assigned to it. One of the team members supervises the other team members on the project. In particular, in the ERD you need to show: 1. All entities with their attributes, including PK and FK attributes 2. Relationship (with name) between entities, and 3. Connectivity and participation between entities.

Build a business use case diagram for a restaurant. Include several business actors with needs and goals as related to the restaurant and business use cases, expressing expectations of the actors from the business. Your diagram should include both external and internal business views of the restaurant.

Data/Database Management system . Consider the ER diagram shown below. Supply the relationship constraints using cardinality ratios and participation constraints on this diagram based on the following assumptions (you may use (min, max) notation if you prefer):  An employee may work in up to two departments or may not be assigned to any department.  Each department must have one and may have up to three phone numbers.  Each department can have anywhere between 1 and 10 employees.  Each phone is used by one, and only one, department.  Each phone is assigned to at least one, and may be assigned to up to 10 employees.  Each employee is assigned at least one, but no more than 6 phones.

System analysis and design IT243 Assignment 2 Considering the following ER-Diagram, answer the following questions: Course Offerings Time : datetime Student Student Course SectionNum : int SID : int Name : varchar(255) Program : varchar(255) Roomld : int CourseNo : int Semester : char(2) Year : int StudentSID : int StudentSID : int Marks : int Examination ID : int Student_Course StudentSID : int Name : varchar(255) Place : varchar(255) Column a) What is the main role of an ER diagram in data modelling? b) How many courses each student can have? c) What is the relationship degree between the entities? d) Is there an associative entity, if yes can you name it? e) What is uniquely identifying the student entity table (Primary Key)?

PRESENTATION Explain Entity Relationship Diagram, symbols, Notations, different components and create an ERD of any given scenario.

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Draw an E-R diagram for a patient appointment system. Consider the entities patient, patient appointment, doctor, prescription,and pharmacy. Identify and depict the cardinality of each relationship. Also identify the attributes and candidate key of each entity

IBased on the given case scenario, you will need to create an entity relation (E-R) diagram using the Crow's foot symbols that models the problem. This will include: Summarise the ERM's components, and names the entities and their relationship  all entities, relationships (including names) and attributes that are relevant, primary keys identified, and include relationship participation - participation (optional / mandatory) symbols and cardinality.   Case Study The following business rules are provided from the description of operations: A customer may request many charter trips. Each charter trip is requested by only one customer. Some customers have not (yet) requested a charter trip. Every charter trip is requested by at least one customer. An employee may be assigned to serve as a crew member on many charter trips. Each charter trip may have many employees assigned to it to serve as crew members. An employee may not yet have been assigned to serve as a crew member on…

Create an ER model for each of the following descriptions:a)Each company operates four departments, and each department belongs to one company.b)Each department in part (a) employs one or more employees, and each employee works for one department.c)Each of the employees in part (b)may or may not have one or more dependents, and each dependentd)belongs to one employee.e)Each employee in part (c) may or may not have an employment history.f)Represent all the ER models described in (a), (b), (c), and (d) as a single ER model.

One of the most important benefits of developing a prototype during the requirements elicitation process is that it allows customers and end users to interact with the system and learn more about it. By seeing and engaging with the system, they may have a better understanding of how technology may be used to support them in their profession. Using prototypes for requirements elicitation has a number of advantages, but it also has certain disadvantages, which we shall examine in this section.