1. Entities:
- Project
- Customer
- Product
2. Attributes:
- Project: project ID, project name, start date, end date
- Customer: customer ID, customer name, contact information
- Product: product ID, product name, description, price
3. Degree of relationship:
- Project and Customer have a one-to-many relationship (one project can have multiple customers)
- Project and Product have a many-to-many relationship (one project can have multiple products, and one product can be part of multiple projects)
4. Cardinalities:
- Project (1) ---- (0 or more) Customer
- Project (1 or more) ---- (0 or more) Product
5. Constraints:
- Project ID and Customer ID must be unique
- Each project must have a start date and an end date
- Product price must be a non-negative value
project customer and product.
1. Identify the entities
2. their attributes
3. Identify the degree of their relationship
4. Identify their cardinalities
5. indentify Constraints
5 answers
customer and product.
1. Identify the entities
2. their attributes
3. Identify the degree of their relationship
4. Identify their cardinalities
5. indentify Constraints
1. Identify the entities
2. their attributes
3. Identify the degree of their relationship
4. Identify their cardinalities
5. indentify Constraints
1. Entities:
- Customer
- Product
2. Attributes:
- Customer: customer ID, customer name, contact information
- Product: product ID, product name, description, price
3. Degree of relationship:
- Customer and Product have a many-to-many relationship (one customer can purchase multiple products, and one product can be purchased by multiple customers)
4. Cardinalities:
- Customer (1 or more) ---- (0 or more) Product
5. Constraints:
- Customer ID and Product ID must be unique
- Product price must be a non-negative value
- Customer
- Product
2. Attributes:
- Customer: customer ID, customer name, contact information
- Product: product ID, product name, description, price
3. Degree of relationship:
- Customer and Product have a many-to-many relationship (one customer can purchase multiple products, and one product can be purchased by multiple customers)
4. Cardinalities:
- Customer (1 or more) ---- (0 or more) Product
5. Constraints:
- Customer ID and Product ID must be unique
- Product price must be a non-negative value
customer.
1. Identify the entities
2. their attributes
3. Identify the degree of their relationship
4. Identify their cardinalities
5. indentify Constraints
1. Identify the entities
2. their attributes
3. Identify the degree of their relationship
4. Identify their cardinalities
5. indentify Constraints
1. Entities:
- Customer
2. Attributes:
- Customer: customer ID, customer name, contact information
3. Degree of relationship: There is no mention of any relationship provided in the prompt. Assuming it is a standalone entity.
4. Cardinalities: Not applicable as there is no relationship specified.
5. Constraints:
- Customer ID must be unique
- Contact information should be properly formatted and valid (based on defined constraints, such as phone number format or email address format)
- Customer
2. Attributes:
- Customer: customer ID, customer name, contact information
3. Degree of relationship: There is no mention of any relationship provided in the prompt. Assuming it is a standalone entity.
4. Cardinalities: Not applicable as there is no relationship specified.
5. Constraints:
- Customer ID must be unique
- Contact information should be properly formatted and valid (based on defined constraints, such as phone number format or email address format)
1 answer