Tài liệu developing a simple PL / SQl pptx

... NULL); Developing a Simple PL/ SQL Block 21Ć25 PL/ SQL Block Syntax Rules Because PL/ SQL is an extension of SQL, the general syntax rules that apply to SQL are also applicable to the PL/ SQL language. Guidelines D Identifiers ... Simple PL/ SQL Block 21Ć9 Declaring Scalar Variables PL/ SQL supports three datatypes—scalar, composite, and reference—that you can use...

Ngày tải lên: 21/12/2013, 06:17

... can assign the NULL value to the variable. Developing a Simple PL/ SQL Block 21Ć25 PL/ SQL Block Syntax Rules Because PL/ SQL is an extension of SQL, the general syntax rules that apply to SQL are ... Builder21Ć16 Developing a Simple PL/ SQL Block 21Ć35 Assigning Values to Variables continued Operators The logical, arithmetic, and concatenation operators used in PL...

Ngày tải lên: 10/12/2013, 17:15

... string. D Any simple comparison containing a null value evaluates to NULL. D An IS NULL comparison evaluates to TRUE or FALSE. Boolean Conditions with Logical Operators Build a complex Boolean condition ... Flow in PL/ SQL Blocks 23Ć7 The IF Statement The structure of the PL/ SQL IF statement is similar to the structure of IF statements in other procedural languages. It allows PL...

Ngày tải lên: 17/01/2014, 09:20

... new application being sent to IIS. Once your application has been deployed to IIS, VS .NET will display a blank Web form. You can think of the Web form as the canvas on which you can place ... Me!"></asp:Button> { // // CODEGEN: This call is required by the ASP.NET Web Form Designer. // InitializeComponent(); base.OnInit(e); } // / <summary...

Ngày tải lên: 21/01/2014, 07:20

... regular inventory of hazardous materials/chemicals maintained? Are discrepancies in daily inventory of hazardous materials/chemicals immediately investigated? Are the storage areas for hazardous ... Is access to in-plant irradiation equipment and materials restricted? Are records maintained to allow easy trace-back of raw materials to suppliers? Are records maintained so as to allow e...

Ngày tải lên: 21/02/2014, 01:20

... changes state. ❑ Add a Setup and Deployment project to create the installation application. ❑ Create the functionality for a Windows service in a class that is instantiated in the OnStart() method. ❑ When ... screen 38 Chapter 2: Developing a Windows Service CertPrs8 / MCAD/MCSD XML Web Services and Server Components Development with Visual Basic .NET / Lind / 222653-6...

Ngày tải lên: 11/12/2013, 14:15

... Oracle: SQL and PL/ SQL Using Procedure Builder23Ć24 Condition is evaluated at the beginning of each iteration. Introduction to Oracle: SQL and PL/ SQL Using Procedure Builder23Ć20 Class Management ... course because unconditional branching goes against the procedural structure of a top-down language such as PL/ SQL. You can mention the GOTO statement. It unconditionally transfe...

Ngày tải lên: 21/12/2013, 06:17

... bootable (does not have io.sys, msdos.sys, and command.com), then an error message is generated that says “Non-System disk or disk error. Replace and strike any key when ready” will display. ... Step 4 In addition to the five files mentioned above, there are certain utilities that can be helpful when working with a computer that does not have an operating system: • DEFRAG.EXE • EDIT....

Ngày tải lên: 21/12/2013, 19:15

... Button.Click Allows the user to specify the filename for the new Access database and then calls the CreateAccessDatabase( ) method in the sample to create the database. CreateAccessDatabase( ) This ... ADOX through COM interop to create the new Access database having the specified filename. The C# code is shown in Example 10-6 . Example 10-6. File: CreateAccessDatabaseForm.cs // Na...

Ngày tải lên: 24/12/2013, 05:15

... Create a Detach/Attach SQL Server Database Dialog Box Situations sometimes arise that require a database to be attached, detached, or both. Perhaps your client needs to move the database from ... btnDetach Button Based on Whether a SQL Server and Database Have Been Chosen This How-To uses the DetachDB and AttachDBWithSingleFile methods to attach and detach a database. Commen...

Ngày tải lên: 24/12/2013, 06:17