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What are the two types of errors? The two types of errors are: a) Logical error b) System error
How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
Record based Logical Models: Use records as the key data representation components Examples: Relational Model: It shows data as well as relationship between data in the form
explain five responsibilities of DBA?
What are called multilevel indices? Indices with two or more levels are known as multilevel indices.
Define shadow paging. An alternative to log-based crash recovery method is shadow paging. This technique requires fewer disk accesses than do the log-based methods.
(1) Insert into PERSON Violated constraint: - Key constraint Reason: - Primary key 1 already exists in PERSON. Dealing: - DBMS could ask the user to provide valid PER
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
The scenario You have been approached to design and implement a prototype of a distributed information system for a national car part retail outlet chain. The company comprises
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