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1. Symbols used to represent parameter placeholders in a SQL statement.
2. A placeholder is a character or sequence of characters used in a SQL statement as a substitute for a parameter value.
3. A clause in SQL that allows you to specify conditions on groups of rows created by the 'GROUP BY' clause.
4. Values that are substituted into the SQL parameter query at runtime.
5. A field in a database or data table that is calculated or derived from other fields, rather than being directly inputted or stored.
6. The process of fetching specific data from a database based on certain criteria or conditions.
7. A clause in SQL that limits the number of rows returned in a query result.
8. A structured collection of data that is organized and accessible in various ways.
9. A clause in SQL that is used to group rows based on one or more columns.
10. A SQL statement that uses parameters to substitute variable values in the query.
11. A statement in SQL that allows you to perform different actions based on a set of conditions.
12. A request for data or information from a database, typically written in a specific query language such as SQL.
13. A clause in SQL that allows you to retrieve only rows from a table that meet specified criteria.
14. A keyword in SQL used to return only unique rows in the result of a query.
15. A nested query in SQL that is placed within another query and is used to retrieve data from multiple tables.
16. A function in SQL that performs calculations on a set of values and returns a single value.
17. A code injection technique that attackers use to exploit vulnerabilities in a database's SQL statements.