javascript barcode scanner Step In Your First Session In Your Second Session in Software

Make USS Code 39 in Software Step In Your First Session In Your Second Session

Step In Your First Session In Your Second Session
Scanning Code-39 In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Making Code39 In None
Using Barcode printer for Software Control to generate, create Code-39 image in Software applications.
PART II
USS Code 39 Scanner In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Code 39 Extended Creator In C#.NET
Using Barcode creation for VS .NET Control to generate, create ANSI/AIM Code 39 image in VS .NET applications.
create table t1 as select * from all_users; select count(*) from t1; select count(*) from t1;
Creating Code 39 In .NET Framework
Using Barcode creation for ASP.NET Control to generate, create Code 3 of 9 image in ASP.NET applications.
Code 39 Full ASCII Generation In Visual Studio .NET
Using Barcode maker for .NET Control to generate, create USS Code 39 image in .NET framework applications.
Results are the same in both sessions
Code 3 Of 9 Maker In VB.NET
Using Barcode encoder for .NET Control to generate, create Code 39 image in .NET applications.
Code128 Creation In None
Using Barcode encoder for Software Control to generate, create Code128 image in Software applications.
3 4 delete from t1; select count(*) from t1; select count(*) from t1;
Drawing Barcode In None
Using Barcode printer for Software Control to generate, create bar code image in Software applications.
Barcode Drawer In None
Using Barcode creator for Software Control to generate, create bar code image in Software applications.
Results differ because transaction isolation conceals the changes
EAN / UCC - 14 Encoder In None
Using Barcode generator for Software Control to generate, create GS1 128 image in Software applications.
Creating Data Matrix 2d Barcode In None
Using Barcode printer for Software Control to generate, create DataMatrix image in Software applications.
5 6 rollback; select count(*) from t1; select count(*) from t1;
UPC-E Supplement 5 Printer In None
Using Barcode maker for Software Control to generate, create UPCE image in Software applications.
Drawing Matrix Barcode In Java
Using Barcode creator for Java Control to generate, create Matrix 2D Barcode image in Java applications.
OCA/OCP Oracle Database 11g All-in-One Exam Guide
Read USS Code 39 In Visual Basic .NET
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in .NET applications.
Making Matrix Barcode In Visual Basic .NET
Using Barcode drawer for .NET framework Control to generate, create Matrix 2D Barcode image in Visual Studio .NET applications.
Results are the same in both sessions
Print Data Matrix In None
Using Barcode encoder for Online Control to generate, create Data Matrix image in Online applications.
UPC-A Supplement 2 Generator In Java
Using Barcode generation for Java Control to generate, create UPCA image in Java applications.
7 8 9 10 11 12 delete from t1; select count(*) from t1; create view v1 as select * from t1; select count(*) from t1; rollback; select count(*) from t1; select count(*) from t1; select count(*) from t1; select count(*) from t1;
Generate DataMatrix In Java
Using Barcode creation for Java Control to generate, create Data Matrix image in Java applications.
UPC A Creation In None
Using Barcode creation for Online Control to generate, create GS1 - 12 image in Online applications.
Oh dear! The DDL statement committed the DELETE, so it can t be rolled back
13 14 drop view v1; drop table t1;
Identify and Administer PL/SQL Objects
PL/SQL is Oracle s proprietary third-generation language that runs within the database You can use it to retrieve and manipulate data with SQL, while using procedural constructs such as IF THEN ELSE or FOR or WHILE The PL/SQL code can be stored on a client machine and sent to the server for execution, or it can be stored within the database as a named block of code EXAM TIP PL/SQL always executes within the database, no matter where it is stored Java can run either within the database or on the user machine
Stored and Anonymous PL/SQL
PL/SQL runs within the database, but it can be stored on either the client or the server PL/SQL code can also be entered interactively from a SQL*Plus prompt Stored PL/SQL is loaded into the database and stored within the data dictionary as a named PL/SQL object When it is saved to the database, it is compiled: the compilation process checks for syntactical errors and also picks up errors relating to the data objects the code addresses This saves time when the code is actually run, and means that programmers should pick up errors at compilation time, before users encounter them Code stored remotely, or ad hoc code issued at the SQL*Plus prompt, is called anonymous PL/SQL It is compiled dynamically; which impacts on performance, and it also raises the possibility that unexpected errors might occur Figure 8-5 shows an example of running an anonymous PL/SQL block and of creating and running a stored procedure The anonymous block in Figure 8-5 creates a variable called INCREASE with the DECLARE statement and sets it to 10 Then the procedural code (within the BEGIN
8: DML and Concurrency
Figure 8-5 Anonymous and stored PL/SQL
PART II
END statements) uses the variable within a SQL statement that updates a column of a table The second example in the figure creates a procedure called INC_SAL, stored within the data dictionary It takes a numeric argument called INCREASE and uses this in a SQL UPDATE statement Then the procedure is invoked with the EXECUTE command, passing in a value for the argument These examples are very simple, but they should illustrate how anonymous PL/SQL runs just once and therefore must be compiled at execution time, whereas stored PL/SQL can be compiled in advance and then executed many times
PL/SQL Objects
There are six commonly used types of PL/SQL objects: Procedure, Function, Package, Package body, Trigger, and Type body All are schema objects stored within the data dictionary Procedures and functions are subprograms usually intended for performing repetitive instructions Packages are collections of procedures and functions, grouped together for manageability Triggers cannot be packaged: they are associated with tables and run whenever an appropriate DML statement is executed against the tables Object types are beyond the scope of the OCP examinations TIP SQL*Plus and Database Control are only suitable for small-scale PL/SQL development For real work, your programmers will need a proper IDE (integrated development environment) tool that will assist with syntax checking, debugging, and source code management
Procedures and Functions
A procedure is a block of code that carries out some action It can, optionally, be defined with a number of arguments These arguments are replaced with the actual parameters given when the procedure is invoked The arguments can be IN arguments,
Copyright © OnBarcode.com . All rights reserved.