BITM 215 Exam 2 Questions Solved 100% with
Certified Correct Answers
• Data consistency - all tables must contain the correct information
• Interactive processing - allows users to access data in real time
• Batch processing - requires transactions to be accumulated and then fed into comp...
BITM 215 Exam 2 Questions Solved 100% with
Certified Correct Answers
• Data consistency - ✔✔all tables must contain the correct information
• Interactive processing - ✔✔allows users to access data in real time
• Batch processing - ✔✔requires transactions to be accumulated and then fed into computers
in large batches
• Dirty data - ✔✔records containing errors
• Data scrubbing - ✔✔eliminating dirty data
• Multidimensional database technology - ✔✔stores data in more than two dimensions
, • Client/server approach - ✔✔user requests to access database
• Distributed databases - ✔✔spread data across networks
• Data mining - ✔✔Process by which data are analyzed and investigated. Objective is to spot
patterns or trends within the data
• Data warehouses - ✔✔large, centralized systems housing enterprise data
• Record matching - ✔✔uses a unique field to combine information from different databases
• Normalization - ✔✔The process of removing redundant data from relational tables. Helps keep
the database as small as possible
• Entity - ✔✔A thing that exists and is distinguishable
• Attributes - ✔✔Describe properties of entities and relationships
• One-One - ✔✔entity is related to at most one other entity
• Many-One - ✔✔entity is related zero or more other entities
• Many-Many - ✔✔There are no restrictions on how many entities are associated with other entities
• Join Lines - ✔✔when two fields in separate tables share the same name between two related tables
• Data Redundancy - ✔✔The unnecessary storage of duplicate data in two or more tables.
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