What is cursor in SQL interview?

A Cursor is a database object that represents a result set and is used to manipulate data row by row…….. Define the steps to use Transact-SQL Cursor. Declare the cursor, Open the cursor, Fetch record row by row, Close cursor, Deallocate cursor……..

What is cursor in SQL?

Cursor is a Temporary Memory or Temporary Work Station. It is Allocated by Database Server at the Time of Performing DML(Data Manipulation Language) operations on Table by User. Cursors are used to store Database Tables.

What is cursor in SQL with example?

A SQL Server cursor is a set of T-SQL logic to loop over a predetermined number of rows one at a time. The purpose for the cursor may be to update one row at a time or perform an administrative process such as SQL Server database backups in a sequential manner.

What is a cursor question answer?

1) A cursor is the position indicator on a computer display screen where a user can enter text. In an operating system with a graphical user interface (GUI), the cursor is also a visible and moving pointer that the user controls with a mouse, touch pad, or similar input device.

What is a cursor in database?

A database cursor is an identifier associated with a group of rows. It is, in a sense, a pointer to the current row in a buffer. … Statements that return more than one row of data from the database server: A SELECT statement requires a select cursor.

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What is the use of cursor?

Cursors are used by database programmers to process individual rows returned by database system queries. Cursors enable manipulation of whole result sets at once. In this scenario, a cursor enables the sequential processing of rows in a result set.

Why do we use cursor in SQL Server?

The major function of a cursor is to retrieve data, one row at a time, from a result set, unlike the SQL commands which operate on all the rows in the result set at one time. Cursors are used when the user needs to update records in a singleton fashion or in a row by row manner, in a database table.

What is cursor and index in SQL?

A cursor is basically used to solve complex logic and works on a row by row manner. … Index, on the other hand, has the main function of retrieving data from tables much quicker. Indexes are created by users on columns that may be accessed frequently.

What is a cursor object?

It is an object that is used to make the connection for executing SQL queries. It acts as middleware between SQLite database connection and SQL query. It is created after giving connection to SQLite database.

What is called cursor?

In computer user interfaces, a cursor is an indicator used to show the current position for user interaction on a computer monitor or other display device that will respond to input from a text input or pointing device. The mouse cursor is also called a pointer, owing to its resemblance in usage to a pointing stick.

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What is difference between cursor and pointer?

The difference between the mouse pointer and cursor is as follows: The mouse pointer is an arrow-like figure that appears on the screen of the computer. It is used to locate the different icons on the screen. … The cursor, however, is a blinking line that appears whenever you type something on the computer.

What is cursor movement?

Arrow keys or cursor movement keys are buttons on a computer keyboard that are either programmed or designated to move the cursor in a specified direction. … Arrow keys are commonly used for navigating around documents and for playing games.

What is cursor and trigger?

A trigger is a procedure (code segment) that is executed automatically when some specific events occur in a table/view of a database, while a cursor is a control structure used in databases to go through the database records. … In such a situation, the declare statement would be inside the trigger.

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