Cursors are what contain the result set of a query made against a database in Android. The Cursor class has an API that allows an app to read (in a type-safe manner) the columns that were returned from the query as well as iterate over the rows of the result set.
What is the purpose of cursor object?
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.
What is the difference between content values and cursor in Android?
Q 12 – What is the difference between content values and cursor in android SQlite? A – Content values are key pair values, which are updated or inserted in the database B – Cursor is used to store the temporary result. C – A & B D – Cursor is used to store data permanently.
What are disadvantages of cursor?
What are the disadvantages of cursors?
- Uses more resources because Each time you fetch a row from the cursor, it results in a network roundtrip.
- There are restrictions on the SELECT statements that can be used.
- Because of the round trips, performance and speed is slow.
What is difference between trigger and cursor?
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.
What is cursor explain with example?
Cursor is a Temporary Memory or Temporary Work Station. It is Allocated by Database Server at the Time of Performing DML operations on Table by User. Cursors are used to store Database Tables. There are 2 types of Cursors: Implicit Cursors, and Explicit Cursors. These are explained as following below.
What is SQL cursor 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 cursor short answer?
1) A cursor is the position indicator on a computer display screen where a user can enter text. … Typically, the pointing cursor is an arrow and the text entry position cursor is a blinking underscore or vertical bar.
How do I change my Cursor on my Android?
Large mouse pointer
- Settings → Accessibility → Large mouse pointer.
- (Samsung) Settings → Accessibility → Vision → Mouse pointer/touchpad pointer.
- (Xiaomi) Settings → Additional settings → Accessibility → Large mouse pointer.
How many types of Cursor subclasses are there?
Different types of cursors available in the Cursor class are DEFAULT_CURSOR, CROSSHAIR_CURSOR, HAND_CURSOR, TEXT_CURSOR, WAIT_CURSOR and etc.
What is content value in Android?
android.content.ContentValues. This class is used to store a set of values that the ContentResolver can process.