Which Best Describes the Use of a Database Trigger

Which of the following best describes a database trigger. 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.

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. For example a trigger can be invoked when a row is inserted into a specified table or when certain table columns are being updated. 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. The trigger must be the first step of the flow.

It prevents unique constraints from being violated. Using triggers is quite valid when their use is justified. One page displays a report.

Section 16 Quiz Database Programming With SQL. The Wikipedia article on database triggers presents a good overview of what triggers are and when to use them in different databases. A servers purpose within a cluster.

Track leads through five different status values. Which of the following best describes a database trigger. Creates a form that enables users to update a single row in a database table.

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. Choose all correct answers Generate a range of numbers and optionally cycle through them again Set a fixed interval between successively generated numbers.

The following discussion is based on SQL Server only. Microsoft 365 plan licensees can use standard connectors but cannot use premium. 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.

If the table is deleted all the associated triggers are also deleted automatically. Use a trigger that populates Billing StateProvince based on a custom object that maps postal codes to statesprovinces. A PLSQL subprogram that executes automatically.

Triggers are used to specify certain integrity constraints and referential constraints that cannot be specified using the constraint. DML events include INSERT UPDATE or DELETE statements. Which of the following best describes a database trigger.

The most common method to get data into a table is to use what command. Special database objects Triggers use specially defined databases objects such as INSERTED or DELETED to access records affected by the database action. The purpose of a particular database.

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. DML triggers is a special type of stored procedure that automatically takes effect when a data manipulation language DML event takes place that affects the table or view defined in the trigger. For example there is no problem if you have.

Question 30 1. A collection of related data. In this example the trigger is using the INSERTED object to gain access to the newly created rows.

A trigger is a piece of code executed automatically in response to a specific event occurred on a table in the database. When to use triggers. Overview of Triggers in SQL.

In a trigger we first specify when the trigger is to be executed and then the action to be performed when the trigger executes. Which of the following best describes a role. It lets you avoid redundant code when multiple programs need to perform the same database operation.

It allows users to log on to the database. You can use triggers to perform the following actions as well as others. A file where every piece of data is alloted the same amount of space.

The INSERT statement is used to table those rows and add them to a history table. Sequences can be used to. It allows foreign key constraints to be violated.

SQL Server all supported versions Azure SQL Database. Which of the following best describes a database trigger. Which best describes a delimited file.

A file where the data fields are separated by some character such as a comma. A good definition for a database is. Which of the statements below best describes the result set returned by this SELECT statement.

Mark for Revie w 1 Points A subprogram that checks whether a user has typed the correct password to log on to the database. 1 - Limit the number of SQL Server triggers per table or view. SELECT VendorID SUM InvoiceTotal - PaymentTotal - CreditTotal AS Column2 FROM Invoices WHERE InvoiceTotal - PaymentTotal - CreditTotal 0 GROUP BY Vendor ID.

The SQL Server DML Trigger is a special type of stored procedures that is designed to perform a sequence of actions on a database table to which the trigger is attached when a Data Manipulation Language DML events such as INSERT UPDATE or DELETE action occurs to modify the content of the database tables or views regardless of whether or. 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. Create trigger trigger_name before after insert update delete on table_name for each.

Which of the following statements best describes an Single Page Master Detail Application Builder form type. Which description best describes a fixed length file. Universal Containers is implementing a new lead status process and wants to be able to do the following.

It executes automatically whenever a particular event occurs within the database. 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. Answer all questions in this section 1.

Which of the following best describes a database trigger. A template for authorization to various database objects. Choose the trigger that best suits your need.

A trigger is a stored procedure in database which automatically invokes whenever a special event in the database occurs. A trigger is invoked either before or after the following event. Choose three Mark for Review.

For example they have good value in auditing keeping history of data without requiring explicit procedural code with. Trigger is a statement that a system executes automatically when there is any modification to the database. A trigger is always associated with a particular table.

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6 Using Triggers

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