Describe the three-schema architecture. Why do we need mappings among schema levels?
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Describe the three-schema architecture. Why do we need mappings among schema levels?
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- The term "three-schema architecture" describes a structure with three tiers in which data is transformed from a request at each tier.What is functional dependency in the context of normalization, and how does it relate to database schema design?What are the key considerations when designing a hybrid database schema that includes both relational columns and JSON datatypes?
- What does "three-schema architecture" mean when referring to a three-level architecture where requests are translated into outcomes at each level?How does the three-schema architecture support database development?8)Compare the binary schema with the binary and explain under which conditions it is better to use which schema.
- Explain the concept of data modeling in the context of a database environment. How is it different from schema design?What is the purpose of conformed dimensions for different star schemas with same data warehousing environment.Explain the differences among external, conceptual, and internal schemas and the reasons for the three-schema architecture for the database?
- Discuss the concept of data modeling and its role in designing a database schema.Discuss the principles of NoSQL database design, including key-value stores, document databases, column-family stores, and graph databases. When should each type be used?Discuss the benefits and challenges of using complex datatypes like arrays and maps in a database schema.
