The correct answer: Data independence
Data independence<span> is the type of </span>data<span> transparency that matters for a centralised DBMS. It refers to the immunity of user applications to changes made in the definition and organization of </span>data<span>. Physical </span>data independence<span> deals with hiding the details of the storage structure from user applications.
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The logical<span> structure of the data is known as the 'schema definition'. In general, if a user application operates on a subset of the </span>attributes<span> of a </span>relation<span>, it should not be affected later when new attributes are added to the same relation. Logical data independence indicates that the conceptual schema can be changed without affecting the existing schemas.
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<span>The physical structure of the data is referred to as "physical data description". Physical data independence deals with hiding the details of the storage structure from user applications. The application should not be involved with these issues since, conceptually, there is no difference in the operations carried out against the data.</span>
Answer:
camera operators
directors of photography
Explanation:
Cinematography is simply the art of taking photos and being in charge of cameras in the process of film-making.
There are alternative names for a cinematographer and they include camera operators and directors of photography
Answer:
As a high-quality communication system, online games provide a virtual world where gamers communicate with each other by using rich interactive multimedia. This would facilitate communication among online gamers and enhance the development and maintenance of interpersonal relationships.
