barcode generator in vb.net codeproject Self Test in Software

Creator Code 3/9 in Software Self Test

14 Self Test
Read Code-39 In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Code 39 Extended Drawer In None
Using Barcode generation for Software Control to generate, create Code 3 of 9 image in Software applications.
1. What is a trigger 2. What are the three types of triggers 3. What type of actions can be performed by the triggered SQL statements 4. Which actions can invoke a trigger A Updating data B Querying data C Deleting data D Inserting data 5. When is an insert trigger invoked 6. A trigger can be defined on how many tables A Only one B One or more C One to three D Any number of tables 7. A(n) ____________ is a space created in memory that holds a trigger process during the
ANSI/AIM Code 39 Reader In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
Paint Code39 In Visual C#.NET
Using Barcode generation for .NET framework Control to generate, create ANSI/AIM Code 39 image in VS .NET applications.
execution of that trigger.
Drawing Code39 In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create Code 3 of 9 image in ASP.NET applications.
Drawing Code 3/9 In VS .NET
Using Barcode generation for .NET Control to generate, create Code39 image in .NET applications.
8. You insert data into Table 1, which invokes an insert trigger defined on that table. The
Code 3/9 Printer In Visual Basic .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create ANSI/AIM Code 39 image in Visual Studio .NET applications.
EAN / UCC - 13 Encoder In None
Using Barcode maker for Software Control to generate, create EAN 13 image in Software applications.
trigger updates information in Table 2, which invokes an update trigger defined on that table. The update trigger deletes information in Table 3, which invokes a delete trigger defined on that table. Which trigger execution context is active at this point
Code-128 Creation In None
Using Barcode printer for Software Control to generate, create Code 128 image in Software applications.
Barcode Creator In None
Using Barcode generator for Software Control to generate, create barcode image in Software applications.
A The trigger execution context for the insert trigger B The trigger execution context for the update trigger C The trigger execution context for the delete trigger
Making Bar Code In None
Using Barcode creation for Software Control to generate, create barcode image in Software applications.
Creating UCC - 12 In None
Using Barcode encoder for Software Control to generate, create GS1 - 12 image in Software applications.
14:
Planet Creation In None
Using Barcode generation for Software Control to generate, create Planet image in Software applications.
Matrix Barcode Generator In Visual Basic .NET
Using Barcode drawer for .NET Control to generate, create Matrix Barcode image in Visual Studio .NET applications.
Creating SQL Triggers
Universal Product Code Version A Recognizer In VB.NET
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET framework applications.
EAN / UCC - 13 Encoder In None
Using Barcode drawer for Microsoft Excel Control to generate, create European Article Number 13 image in Office Excel applications.
9. If three triggers are invoked during a session, how many trigger execution contexts are
GTIN - 12 Scanner In .NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET framework applications.
Making European Article Number 13 In None
Using Barcode creation for Font Control to generate, create EAN13 image in Font applications.
created in that session
Make Linear 1D Barcode In VS .NET
Using Barcode encoder for .NET framework Control to generate, create 1D image in .NET applications.
Generate EAN / UCC - 13 In Java
Using Barcode encoder for BIRT reports Control to generate, create EAN / UCC - 13 image in BIRT reports applications.
10. What information is included in a trigger execution context 11. In which clause of the CREATE TRIGGER statement do you assign correlation names to
old and new data
A FOR EACH B ON C REFERENCING D WHEN 12. In which clause of the CREATE TRIGGER statement do you specify whether the triggered
SQL statements are executed once for each row or once for each statement
A FOR EACH B ON C REFERENCING D WHEN 13. You re creating a trigger definition for an insert trigger. Which REFERENCING clauses
can you include in your CREATE TRIGGER statement
A REFERENCING OLD ROW AS Old B REFERENCING NEW ROW AS New C REFERENCING OLD TABLE AS Old D REFERENCING NEW TABLE AS New 14. A(n) ____________ trigger allows you to specify the column names of a subject table. 15. What keywords can you use to designate whether the triggered SQL statements are
executed before or after the data modification statement is applied to the subject table
16. You re creating an update trigger on the CD_INVENTORY table. The table includes a
column named IN_STOCK. You want the triggered SQL statements to be executed only when the IN_STOCK value of the updated row exceeds 20. Which clause should you include in your CREATE TRIGGER statement to restrict when the statements are executed
A WHERE B HAVING C FOR EACH D WHEN
SQL: A Beginner s Guide
17. What statement must you include in your CREATE TRIGGER statement if the trigger
definition includes more than one triggered SQL statement
18. Which statement can you use to delete a trigger from the schema 19. What SQL statement do you use to alter a trigger definition
Using SQL Cursors
Copyright 2009 by The McGraw-Hill Companies. Click here for terms of use.
SQL: A Beginner s Guide
Key Skills & Concepts
Understand SQL Cursors Declare a Cursor Open and Close a Cursor Retrieve Data from a Cursor Use Positioned UPDATE and DELETE Statements
s we have looked at different aspects of SQL throughout this book, we have used direct invocation to create and access various data objects. Direct invocation, or interactive SQL, is a type of data access method that supports the ad hoc execution of SQL statements, usually through some sort of client application. For example, you can use SQL Server Management Studio or Oracle s iSQL*Plus to interact directly with your SQL database. However, direct invocation generally represents only a small percentage of all database use. A far more common method used to access SQL databases is embedded SQL, a data access model in which SQL statements are embedded in an application programming language, such as C, Java, and COBOL. To support embedded SQL, the SQL standard allows you to declare cursors that act as pointers to specific rows of data in your query results. This chapter explains why cursors are used and how cursors can be declared, opened, and closed within an SQL session. You ll also learn how to retrieve data using the cursor so that your programming language can work with SQL data in a format that the application can process.
Understand SQL Cursors
One of the defining characteristics of SQL is the fact that data in an SQL database is managed in sets. In fact, query results returned by SELECT statements are often referred to as result sets. These result sets are each made up of one or more rows extracted from one or more tables. When working with SQL data interactively, having data returned in sets rarely presents a problem because you can normally scroll through the query results to find the information you need. If the size of the results is too great to easily skim through, you can narrow the focus of your query expression to return a more manageable result set. However, most data access is through means other than direct invocation (despite the fact that we access data interactively throughout the book). One of the most common methods, embedded SQL, accesses data through SQL statements embedded in an application program. The data elements returned by the SQL statements are used by the outer programming language the host language to support specific application processes. The problem we run into with this arrangement is that the application programming languages are generally not equipped to deal with data returned in sets. As a result, an impedance
15:
Copyright © OnBarcode.com . All rights reserved.