How many of the relations in Johnny's logical database design have a composite primary key?

Q: 1. what is the relationship between Functional Dependency and Normalization? 2. partial dependency…

A: step 1 The answer for above questions is given in the below step;

Q: e or false

A: Given  The word relation (in relational database) is NOT the same as the word relationship (in E-R…

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

A: Entity Relationship Diagram is a conceptual, graphical, and logical structure of a database. Entity…

Q: Is temporally variable information a thing in relational database design? Is that the case, what…

A: Time-variant: The passage of time is connected to the data that is stored in a data warehouse. The…

Q: What are the disadvantages of using composite attributes in database design?

A: In this question disadvantages of utilizing composite attributes in the database design need to be…

Q: Write about the three circumstances that call for denormalization of relations prior to the…

A: Denormalization is a performance-enhancing method that is applied to a previously normalized…

Q: How about a rundown of the advantages that come with using tables in database systems? Could you…

A: Answer:

Q: Define the terms parent and child as they apply to tables in a database design and give an example…

A: A parent is a 1:N relationship row on one side. A child is a row in a 1:N ratio on many sides.…

Q: In relational database menagement systems, what is a relation

A: In a relational database management systems, a relation is: A. A set of attributes B. An object C. A…

Q: QUESTION 2 Consider the database schema below:    Company (CompnayID: integer, CompnayName:…

A: Definition of Candidate Key in DBMS: Candidate keys are super keys that don't have any redundant…

Q: Explain the concept of a foreign key constraint in database design. How does it enforce referential…

A: A foreign key is a column or combination of columns within a table that requires its values to…

Q: Discuss the concept of surrogate keys in data modeling and their benefits in database design.

A: In the realm of data modeling surrogate keys are identifiers specifically generated for use within a…

Q: 2 CREATE TABLE employee ( 3 eid INTEGER PRIMARY KEY, name TEXT NOT NULL, AGE INTEGER NOT NULL,…

A: A database is a logically ordered set of structured data stored on a computer electronically. A…

Q: What are Multivalued attributes? What is their value for database design?

A: Multivalued attributes are attributes that can have multiple values for a single entity. For…

Q: Give an example of each of the phrases parent and child as they apply to tables in a database…

A: A parent is a 1:N relationship row on one side. A child is a row in a 1:N ratio on many sides. Say…

Q: Implement a new independent entity phone in the Sakila database. Attributes and relationships are…

A: There is only one error in the above code and that is the ALTER TABLE command on the address table.…

Q: What are the potential drawbacks of over-normalization in database design?

A: A database system, often referred to as a Database Management System (DBMS), is a software…

Q: Is it ever a good idea to use composite primary keys? What are your thoughts on using composite…

A: Composite primary keys are a special type of primary key.

Q: When using subtype associations, it's vital to talk about the different database table alternatives.…

A: Introduction: When using subtype associations, it's vital to talk about the different database table…

Q: Discuss the benefits of Second Normal Form (2NF) and Third Normal Form (3NF) in database design.

A: In the field of database design, normalization is a crucial process to organize data efficiently and…

Q: Figure Q3.13 The Ch03_VendingCo database tables Database name: Ch03_VendingCo Table name: BOOTH…

A: A many-to-many relationship occurs when multiple records in a table are associated with multiple…

Q: Is there a connection between this relationship and the way databases are built at all?

A: In computer science, databases are constructing in ways that reflect dealings between a ranges of…

Q: Write the three situations that suggest relations be denormalized before database implementation.

A: To be determine: Write the three situations that suggest relations be denormalized before database…

Q: What does it mean when a relationship is well-structured? In logical database architecture, why…

A: Introduction: A database is a logically organised collection of structured data kept electronically…

Q: Explain why the join operation in relational algebra can be an enormous drain on the database…

A: NOTE  :-  Below i explain the answer in my own words by which you understand it well.   Join is a…

Q: How do surrogate keys support data warehousing design?

A: To uniquely identify records in a data warehouse, surrogate keys play a crucial part in the…

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: How do materialized views optimize data access in a relational database?

A: Optimizing data access is essential for effective information retrieval in the complex world of…

Q: What does it mean when a relationship is well-structured? In logical database architecture, why are…

A: Given:

Q: 5.6 LAB - Implement independent entity (Sakila) Implement a new independent entity phone in the…

A: First check whether phone_id column exists in your customer, staff, and store table or not. If…

Q: What is the role of Entity-Relationship Diagrams (ERD) during the initial stages of database design?

A: Entity-relationship diagrams (ERDs) are a visual representation of a database system’s structure and…

Q: Why do you feel entity relationship (ER) diagrams are crucial in regard to database architecture?

A: INTRODUCTION: Database architecture: Database architecture is a visual representation of a database…

Q: Why do we do the normalization step of database design, particularly in the logical stage?

A: Why do we do the normalization step of database design, particularly in the logical stage?

Q: When mapping entities to one another for a relational database, there are several different…

A: Defined the mapping relationship in a relational database

Q: Why is the normalization step in database design performed at the logical phase?

A: Introduction: Normalization is a process that is part of an information base strategy that…

Q: What is the impact of having a high rate of database write operations on query optimization?

A: A high rate of database writing operations can have a negative impact on query optimization. This is…

Q: The conditions that advise the database designer to make advantage of supertype and subtype…

A: When a generic object is associated with several subtypes, it is referred to as a supertype.  A…

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.