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Why are cursors necessary in embedded SQL?
A cursor is an object used to store the output of a query for row-by-row processing through the application programs. SQL statements operate on a set of data and return a set of data. Instead, host language programs operate on a row at a time.
The cursors are used to navigate by a set of rows returned through an embedded SQL SELECT statement. A cursor could be compared to a pointer.
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 wa
external and internal mapping with examples
Enumerate or state the steps in creating a relevant database of a shop.
Explain Record Based Logical Models? Record-Based logical Models: Also define data at the conceptual and view levels. Unlike object-oriented models, are used to state overall
waht is a repeating group?
Some disadvantages of File Oriented System ?
Question: The following relational database schema corresponds to a part of a database used by the Registry Department of a university. DEPARTMENT (d#, d-name, head-of-dept)
Describe different steps of the object-oriented design process. The broad steps of the object-oriented design process are: a. Define context and modes of use of the system
Explain the Strategy of Database Planning ?
What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
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