18 Questions
What is a key consideration when building a database?
Content and access
What is the purpose of a database schema?
To describe the entire database and its relationships
What is an external level subschema focused on?
The end user level
What is the purpose of a conceptual schema?
To map the DBMS for database analysts
What is a key aspect of data modeling?
Specifying the relationships between databases
What is the internal level schema used for?
To create a data dictionary
What is the primary function of a Database Management System (DBMS) software?
To manage the relational database and extract data from it
What is the purpose of mapping external-level views to conceptual-level schema?
To translate user views into conceptual schema
What type of schema is represented by the Student Record and Class Record entities?
Conceptual-level schema
What is the primary purpose of a data warehouse?
To support decision-making with information from various processes, products, and customers
What is the relationship between the Enroll entity and the Student and Class entities?
Many-to-many
What is the purpose of indexing in the Student Record and Class Record entities?
To optimize query performance
What is the difference between a data warehouse and a data mart?
A data warehouse is used for business analysis, while a data mart is a subset of a data warehouse
What is the purpose of data mining in the example of the grocery chain?
To analyze customer buying patterns to increase revenue
What is the primary source of data for an information system?
Raw data stored on disk
What is the result of the data mining analysis in the grocery chain example?
The identification of a pattern between diaper and snack purchases
What is an example of how the grocery chain could use the newly discovered information?
By moving the snack display closer to the diaper display
What is the primary benefit of using data warehouses and data marts?
To support high-level decision-making with integrated data
Test your knowledge of database design principles, including data modeling, database characteristics, and considerations for building a database. Covering topics such as content, access, logical structure, and physical organization.
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