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What are the reasons for having variable length records? What are the various ways to store variable length records?
Variable-length records arise in a database in various ways:
(i)Storage of multiple items in a file. (ii)Record types allowing variable field size (iii)Record types allowing repeating fieldsVarious ways of storing variable length records:
(i) In fixed form through allocating every record, maximum amount of space in which can be occupied a record and padding smaller sized records along with nulls. (ii) Special separator characters among the records to delineate variable length records.
Design a gennalization and specialization hierarchy for an automobile sales company
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
what is entity in database system?
Describe DROP TABLE command of SQL along with both the options - CASCADE and RESTRICT. DROP TABLE command - This command drops the specified table. Dropping a table also dro
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
Demonstrate the Design of associations During object design phase we must design a strategy to implement associations. Association may be unidirectional or bi-directional. Wha
The users who use easy-to-use menu are called ? The users who use easy to use menu are called as Naïve users.
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
1. Create a subroutine that does the remote blast on the file protein.fa. 2. Pass that returned files from the blast to another subroutine that parses the output and sends it to
What are the various properties of Relational tables? Relational tables have 6 properties: 1. Each row is unique. 2. Column values are of the same kind. 3. Values are
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