swen2005 sales SalesNumber: int(10) SalesDate: date # Sales Total: decimal(7,2) swen2005 sales details number: int(10) # SalesNumber : int(10) prodid: varchar(20) # price : decimal(7,2) # qty : int(10) swen2005 products number: int(11) @prodid: varchar(20) Ⓒ prodname : varchar(30) # price : decimal(10,2) # onhand : int(11)

Q: Code for Mapping relationship with Entity Framework Code First: One-to-one and variations

A: Code to map one-to-one type relationships using Entity Framework.

Q: This article describes three situations when using a surrogate key instead of the connection key is…

A: A surrogate key is a fictitious primary key used to uniquely identify a record in a database table.…

Q: What are the differences between weak and strong entity sets?

A: An entity set is a compilation of similar types of entities. Entities are a crucial idea in…

Q: An ID-dependent Weak Entity typically result in a table with a compound primary key with at least…

A: A weak entity in a relational database is one that can't be uniquely identified by just its…

Q: Explain entity sets.

A: Entity sets are a fundamental concept in the field of entity-relationship modeling, which is used to…

Q: List all of the many properties that the Entity-Relationship (ER) model has.

A: 1. Describe the different kinds of characteristics in the Entity-Relationship (ER) model. Solution:…

Q: OO questions Create the UML diagram for the two entities( person, books). A person has borrowed…

A: The "Person" class has a private attribute `id` to represent a unique identifier for each person and…

Q: What distinguishes a weak entity set from a strong entity set?

A: In database design, an entity set is a group of similar entities, such as customers or products. An…

Q: Construct an (E)ER diagram for a hospital system with the following requirements: Patients…

A: The hospital system described below is a database system designed to manage information about…

Q: It is possible for the same characteristic to have both a main key and a candidate key.

A: Main key, also known as a primary key, is a specific candidate key that is chosen as the primary…

Q: Consider the following entity relationship diagram. Booking Employee Building • Booking ID > •…

A: Every booking is associated with exactly one employee. Answer: True   Every employee is associated…

Q: When is it necessary to represent a many-to-many connection using an associated entity?

A: According to the question Many-to-many connections are likely the trickiest connections to uncover…

Q: draw the er diagram and label

A: To create an ER diagram based on the provided scenario for reserving baseball tickets, here's a…

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.