49 Questions | By Sonfackjoyce677 | Last updated: Mar 21, 2022 | Total Attempts: 157 Show Settings Feedback During the Quiz End of Quiz Difficulty Sequential Easy First Hard First Do you know what is database management? Database management allows the user to organize, store and retrieve information from a computer. It can also describe the data storage, operations, and security practices of a database administrator. This quiz will require you to know things like how entity subtypes and supertypes are organized in a specialization hierarchy and important inheritance characteristics. This quiz will teach you about database management and what it entails.
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20 Questions each carries 1 mark and the time limit is 20mins Questions: 20 | Attempts: 611 | Last updated: Mar 21, 2022
If you are very new to computers, or just want to test your knowledge, then it's a very basic computer
skills test is for you. Even if you are applying for a job, and they have required you to take the basic computer skills... Questions: 10 | Attempts: 236959 | Last updated: Apr 18, 2022
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+ Show more Back to top What defines the relationship between a supertype entity and the subtype entities?A supertype is a generic entity type that has a relationship with one or more subtypes. A subtype is a sub-grouping of the entities in an entity type that is meaningful to the organization and that shares common attributes or relationships distinct from other subgroups.
Are subtypes that contain a unique subset of the supertype entity set?Overlapping subtypes are subtypes that contain a unique subset ofthe supertype entity set. Disjoint subtypes are subtypes that contain nonunique subsets ofthe supertype entity set.
Do subtypes inherit relationships?Just as subtypes inherit relationships they also inherit any attributes of their supertype, and we also have that supertypes do not inherit the attributes of their subtypes.
Is the process of defining one or more subtypes of the supertype and forming Supertype subtype relationships?Generalization; specialization. Generalization is the process of defining a generalized entity type from a set of more specialized entity types while specialization is the process of defining one or more subtypes of the supertype.
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