MC	Which statement is NOT CORRECT?	A search key can be composite, meaning that it can consist of a combination of values	incorrect	A search key determines the criteria for retrieving records	incorrect	A search key can be used to retrieve all records of which a certain attribute type falls within a range	incorrect	A search key needs to be a unique identifier of a record	correct	
MC	How is a row/tuple translated into an internal data model?	Stored record	correct	Data set	incorrect	Physical storage structure	incorrect	Data item	incorrect	
MC	What does DASD stand for?	Database appropriate storage device	incorrect	Directly accumulative storage device	incorrect	Data accumulative storage device	incorrect	Directly accessible storage device	correct	
MC	What does DASD stand for?	Directly accessible storage device	correct	Data accumulative storage device	incorrect	Directly accumulative storage device	incorrect	Database appropriate storage device	incorrect	
MC	Which of the following file organization methods is not a primary file organization method?	Heap files	incorrect	Linked lists	correct	Sequential file organization	incorrect	Hash file organization	incorrect	
MC	Which statement is CORRECT?	An important application of tree data structures is when they provide a physical index structure to speed up retrieval of records.	correct	An advantage of one-way linked lists, where each record contains a pointer to its logical successor, is that not all records must be retrieved any longer, because frequently only part of the list needs to be processed.	incorrect	Secondary file organization methods make insertion and deletion of records a lot easier.	incorrect	An inverted file defines an index over a unique, ordered search key of the data set.	incorrect	
MC	When translating a logical data model into an internal data model, what should be taken into account?	The physical storage properties	incorrect	The types of operations that will be executed on the data	incorrect	The size of the database	incorrect	All of these aspects should be taken into account	correct	
MC	In which of these cases can we make use of delimiters to separate attributes?	The data is stored in mixed files	incorrect	Some attributes have data types that can have variable lengths as input	incorrect	Some attributes are multivalued	incorrect	In all of these cases	correct	
MC	How is a row/tuple translated into an internal data model?	Physical storage structure	incorrect	Data set	incorrect	Data item	incorrect	Stored record	correct	
MC	Which of the following file organization methods is not a primary file organization method?	Linked lists	correct	Hash file organization	incorrect	Sequential file organization	incorrect	Heap files	incorrect