Introduction to Database System The activity of a file is a measure of the percentage of existing records updated during a run refers to how closely the files fits into the allocated None of these if high, reduces processing efficiency for sequential and nonsequential files is a low percentages of number of records added or deleted from a file is a measure of the percentage of existing records updated during a run refers to how closely the files fits into the allocated None of these if high, reduces processing efficiency for sequential and nonsequential files is a low percentages of number of records added or deleted from a file ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A ternary relationship is so called because in contains two entities and one association between them. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following refers to something that can be identified in the user's work environment, something that the users want to track? Identifier Attribute Entity Relationship Identifier Attribute Entity Relationship ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to select data in rows and column from one or more tables? LIST None of these SELECT BROWSE CHOOSE LIST None of these SELECT BROWSE CHOOSE ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The modify operation is likely to be done after Delete Insert None of these Look-up All of these Delete Insert None of these Look-up All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If attribute A determines both attributes B and C, then it is also true that: (B,C) → B → A → C → (B,C) → B → A → C → ANSWER DOWNLOAD EXAMIANS APP
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