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Q: Which of the following is false: A. Tables are joined by using primary key/foreign key combinations…

A: The following statement is false B. A primary key can consist of more than one attribute

Q: my question is about database; i have a data trainer_id , with description (should increment). what…

A: Datatype = int (integer) Size= 4 bytes

Q: Explain the concept of eventual consistency in NoSQL databases. How is it different from strong…

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Q: Discuss the differences between top-down and bottom-up database design methods.

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A: Introduction    Given, An ER diagram . We have to calculate the minimum number of relation required…

Q: What is normalization in database design, and why is it important? Describe the normal forms up to…

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Q: What is the difference between a process and a thread in the field of computer science?

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Q: Explain the statement, Some physical database design techniques change the logical design, and some…

A: The statement "Some physical database design techniques change the logical design, and some do not"…

Q: It is essential to discuss the various database table possibilities when dealing with subtype…

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

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Q: re there any other database relationships besides 1 M and 1:1? If so, describe the relationship and…

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Q: Why are some table structures deemed terrible while others are deemed good? How can you know which…

A: Given that; The topic is about Why are some table structures deemed terrible while others are deemed…

Q: Describe the concept of database normalization forms (1NF, 2NF, 3NF, BCNF) and provide an example of…

A: Database normalization plays a role in the design of databases, aiming to perfect their structure,…

Q: How do you decide between an Object Relational Mapping (ORM) framework and an ODBC/JBDC connection…

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Q: Keeping the join as a materialized view may be handy if a parallel data store is utilized to hold…

A: A join is carried out as follows: Think about a cloud data storage system that is utilized to store…

Q: How do surrogate keys support data warehousing design?

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Q: Describe the ACID properties in the context of database transactions. Why are they important, and…

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Q: Explain normalization technique with respect to a redundant and non-redundant database table.

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Q: Indicate the changes (using the shorthand representation) that you would need to make to the…

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Q: Using the types of entities found in the Colonial Adventure Tours database (trips, guides, clients,…

A: The Set of entities provided for Colonial Adventure Tours Database includes Trips, Guides, Clients…

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…

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.