Which Best Describes the Use of a Database Trigger

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Which of the following best describes a role. The Wikipedia article on database triggers presents a good overview of what triggers are and when to use them in different databases.

6 Using Triggers

The NEXTVAL virtual column returns the integer that was most recently supplied by the sequence.

. Which of the following statements best describes an Single Page Master Detail Application Builder form type. Which of the following best describes a database trigger. Overview of Triggers in SQL.

Use triggers to guarantee that when a specific operation is performed related actions are performed. The Principal of Least Privilege C. Prevent changes to the database schema Audit database schema changes.

The INSERT statement is used to table those rows and add them to a history table. Which of the following best describes a database trigger. A file where every piece of data is alloted the same amount of space.

When to use triggers. In a trigger we first specify when the trigger is to be executed and then the action to be performed when the trigger executes. SQL Server provides us with two main types of triggers.

These triggers are created at the database level or server level based on the type of DDL event. None of the above. It lets you avoid redundant code when multiple programs need to perform the same database operation.

Last Updated. These triggers are useful in the below cases. Mark for Review 1 Points A PLSQL subprogram that executes automatically whenever an associated database event occurs A subprogram that is invoked explicitly by the calling application A PLSQL subprogram that inserts rows into a logging table.

For example there is no problem if you have. The DDL triggers will be fired in response to different Data Definition Language DDL events such as. Which description best describes a fixed length file.

The most common method to get data into a table is to use what command. The following discussion is based on SQL Server only. Mark for Revie w 1 Points A subprogram that checks whether a user has typed the correct password to log on to the database.

The DML Triggers and the DDL triggers. Using triggers is quite valid when their use is justified. You can use triggers to perform the following actions as well as others that are not.

The purpose of a particular database. Trigger is a statement that a system executes automatically when there is any modification to the database. Use the following guidelines when designing triggers.

SQL Server has no limitation on the number of triggers that you can define on a table or view but as a best practice its recommended to limit the number to one trigger or at most two associated with the same firing event on an object. A file where the data fields are separated by some character such as a comma. Mark for Review 1 Points.

The Least Privilege User Principal B. Because a trigger resides in the database and anyone who has the required privilege can use it a trigger lets you write a set of SQL statements that multiple applications can use. A subprogram that checks whether a user has typed the correct password to log on to the database A PLSQL subprogram that executes automatically whenever an associated database event occurs.

A collection of related data. A template for authorization to various database objects. Presents users a set of data in a searchable customizable report.

A trigger in database terms is a set of instructions thats activated or we say it is fired by some specific event normally a command. Triggers are used to specify certain integrity constraints and referential constraints that. In this example the trigger is using the INSERTED object to gain access to the newly created rows.

Choose three Mark for Review. Use database triggers only for centralized global operations that should be fired for the triggering statement regardless of which user or database application issues the statement. DDL triggers in SQL Server are fired on DDL events.

The next step is to create the database trigger that will be used to populate the ChangeLog table each time an applicable event occurs on the database. Choose the Correct answer. A trigger is a stored procedure in database which automatically invokes whenever a special event in the database occurs.

Which of the following best describes a database trigger. Which of the following best describes the function of the NEXTVAL virtual column. One page displays a report.

Last Updated. For example they have good value in auditing keeping history of data without requiring explicit procedural code with. It executes automatically whenever a particular event occurs within the database.

Which of the following best describes a database trigger. Creates a form that enables users to update a single row in a database table. A PLSQL subprogram that executes automatically.

A SQL trigger is a special type of stored procedure in a database which gets executed automatically whenever special events like any data manipulation INSERT UPDATE or DELETE definition CREATE ALTER and DROP or logon event occurs in the database usually to protect the integrity of the database or fulfill some business requirements. Choose all correct answers Generate a range of numbers and optionally cycle through them again Set a fixed interval between successively generated numbers. The Only Access Principal.

Which of the following best describes a database trigger. A servers purpose within a cluster. It prevents unique constraints from being violated.

Special database objects Triggers use specially defined databases objects such as INSERTED or DELETED to access records affected by the database action. A good definition for a database is. 1 - Limit the number of SQL Server triggers per table or view.

Which best describes a delimited file. The NEXTVAL virtual column displays the order in which Oracle retrieves row data from a table. The SQL Server trigger is a special type of stored procedures that is automatically executed when an event occurs in a specific database server.

For example a trigger can be invoked when a row is inserted into a specified table or when certain table columns are being updated. 1 What is the term used to describe giving an AWS user only access to the exact services heshe needs to do the required job and nothing more. Sequences can be used to.

Against create alter and drop statements etc. The following script will create the trigger. It allows foreign key constraints to be violated.

It allows users to log on to the database It executes automatically whenever a particular event occurs within the database It prevents unique constraints from being violated It executes automatically whenever a user clicks on a button with their mouse. Answer all questions in this section 1. It allows users to log on to the database.

Again m ake sure to enter the correct database name in the USE DATABASE_NAME line at the top of the script. Section 16 Quiz Database Programming With SQL.

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