Visual Basic 6 Client/Server Programming Gold Book:Table of ...

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Cancel method, 249 CancelUpdate method, 249 Close method, 249 columns, 252 Delete method, 249–250 Edit method, 250 EditMode property, 245 EOF property, 245 GetClipString method, 250 GetRows method, 250–251 hStmt property, 245 LastModified property, 245–246 LockEdits property, 246 LockType property, 246 MoreResults method, 251 Move method, 251 MoveFirst method, 251 MoveLast method, 251 MoveNext method, 251 MovePrevious method, 251 Name property, 246 PercentPosition property, 246 Requery method, 251 Restartable property, 246 ResultChanged event, 239 ResultCurrencyChanged event, 239 RowCount property, 247 RowStatusChanged event, 239 Status property, 247 StillExecuting property, 247 Transactions property, 247 Type property, 247 Updatable property, 247–248 Update method, 251 UpdateCriteria property, 248 UpdateOperation property, 249 WillUpdateRows event, 239–240 rdoResultsets collection, 238–252 rdoTable object, 212, 261 rdoTables collection, 261
doVersion property (rdoEngine object), 215 RDS (Remote Data Services), 267, 271, 508 RDS.DataControl object, 306 RDS.DataSpace object, 306 RDSServe.DataFactory object, 306 ReadyState property, 465 Record locking, 31 Record sets, 188–189 RecordChangeComplete event (RecordSet object), 297 RecordCount property, 317, 426 RecordSet object, 193, 300 TableDef object, 170 RecordsAffected property Database object, 159 QueryDef object, 182 RecordSet object, 135, 138, 187–202, 294–305, 310, 320, 333, 345–346, 350–351, 362, 403, 409, 420 AbsolutePosition property, 190 AddNew method, 196 ADO, 274 BatchCollisionCount property, 190 BatchSize property, 190 BOF property, 190–191 Bookmark property, 191 CacheSize property, 192 CacheStart property, 192 Cancel method, 196 CancelUpdate method, 196 Clone method, 196–197 Close method, 197 Connection property, 192 constants, 305 CopyQueryDef method, 197 DateCreated property, 192 Delete method, 197 Edit method, 197–198 editing methods, 303 EditMode property, 192 events, 295–298 Fields collection, 172, 189
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Brief Full Advanced Search Search T
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The Active Data Control Where To Go
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Index Products | Contact Us | About
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technology. We have kept our eye to
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people checked each piece of code.
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and sell through your Web site. (Tr
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grammatical correctness. Kris offer
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In this chapter, I introduce the un
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example, a “high-speed” Etherne
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which customers are from the state
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COM automatically “knows” how t
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little more than present forms, men
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Figure 1.4 The beginning of a simpl
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IBM’s Token Ring architecture run
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application to application. The IP
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Any database that organizes data in
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proper choice is highly dependent o
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equire the database to work too har
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You might want to consider the fina
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integrated well with XDB. The choic
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The columns correspond to fields in
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In this example, the database autom
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places, such as 1.25. An irrational
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key, we assign one to the Student_C
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Second normal form, usually abbrevi
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might want to consider selectively
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This example adds a column named Em
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(such as being only ‘M’ or ‘F
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Previous Table of Contents Next Pro
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query result. (I expanded upon this
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If your database does not provide a
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You can join together more than two
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SELECT EMP_NO AS 'NUMBER', EMP_LNAM
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FROM EMPLOYEE The result is: MIN(EM
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GENEVIEVE WESLEY The LTRIM function
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(15, 2) returns 1 because 15 divide
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SELECT SUM(EMP_SALARY) FROM EMPLOYE
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300 66958.36 400 53983.02 You can n
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ORDER BY EMP_DEPT_NO The output of
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SELECT EMP_NO, EMP_FNAME, EMP_LNAME
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the ODBC API as a means of database
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DAO/Jet * 4 7 5 6 DAO/ODBCDirect Da
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Listing 4.1 opens three files (in A
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Dim sBuffer As String * 512 Get #iF
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ODBCDirect was added to DAO with ve
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later in this chapter. For new rela
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End Sub Figure 4.5 The Employee app
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Listing 4.3 Code from frmDSNList. P
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When placing a data-aware control o
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Str$(Adodc1.RecordSet.RecordCount)
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similar to general modules in that
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source to other objects, including
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If bCancel Then adStatus = adStatus
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Structured Query Language, which li
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Figure 5.1 DAO objects in the Jet w
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dbVersion11 new_db will be the Jet
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collection after database operation
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dbDecimal Decimal dbDouble Double d
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nested transactions in an ODBCDirec
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wrkEmp.BeginTrans ' Start of inner
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Set User = object.CreateUser (name,
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three properties: Name, Password, a
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Database Type Specifier Example Mic
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QueryDef object and thus omits the
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this, specify a URL instead of a fi
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topic. Connection also has a Cancel
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docTemp.Properties.Append prpTemp d
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property is useful when two users m
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ForeignName property is set to the
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• The Primary property is a Boole
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' Display how many unique values th
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current object should be replicated
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"EMP_LNAME, EMP_SALARY FROM EMPLOYE
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set automatically reflects the chan
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workspaces. In a Jet workspace, BOF
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each record in the RecordSet. The c
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occurrences. FindLast finds the las
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Products | Contact Us | About Us |
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chapter provides an example of usin
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End Sub Table 5.15 Constants for th
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loaded as it does in DAO, and RDO p
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doEngine object is created. Additio
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messages (ODBC SQL_SUCCESS_WITH_INF
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in an rdoEnvironment object, all rd
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If cSalary !emp_Salary Then ' If c
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password parameters are not supplie
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The rdoConnections Collection And r
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Command1(0).Enabled = True Command1
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Dim vErr As rdoError For Each vErr
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objects. If the query was successfu
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embrace where two processes lock ea
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Connect:="UID=Coriolis;PWD=Coriolis
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If MsgBox(sMsg, vbYesNo & vbQuestio
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pbStatus.Value = .PercentPosition D
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cannot be updated. If the columns r
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Dim vArray As Variant ' Get 100 row
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modified. You can set the Cancel ar
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The SourceColumn and SourceTable pr
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stored procedures from Visual Basic
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Figure 6.6 The RDO parameters demon
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Private Sub MSRDC1_Error(Number As
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With VB6 comes MDAC 2.0, which adde
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Remote Data Services (RDS) is a dev
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adGUID Globally unique identifier (
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(ByVal pError As ADODB.Error, _ adS
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that few records are affected and a
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adXactChaos (Default.) Cannot overw
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(adSchemaTables, Array(Empty, Empty
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Dim sTable As String sTable = lbTab
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Figure 7.6 Message from the data so
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A value of 0 specifies that there i
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• The Direction property is used
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To move through a set of records, y
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ByVal pRecordset As ADODB.Recordset
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adOpenStatic. If you will be perfor
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as an argument the number of record
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FileName argument is self-explanato
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OriginalValue property contains the
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ADO, RDO, and DAO are roughly analo
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it exploits enough different method
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"UID=Coriolis;PWD=Coriolis" Set aco
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You must modify the connection stri
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' Display the results With arsRepor
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Objects library to Microsoft Active
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lbTables(0).AddItem ars.Fields(1).V
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e automatically created (!). To use
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eing the data source of a Command o
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default caption. I did this for the
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4. Now, you will need to add naviga
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txtRaise(2) = deStoredProcedure.Com
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object’s name by prefixing it wit
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The DataReport object supports a nu
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Command object represents a band in
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ight-click on the Flexgrid control
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Select Case dir Case rsFirst rs.Mov
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ByVal pConnection As ADODB.Connecti
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If IsNull(rs(iRs).Fields(iCtr - iSt
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possible. In fact, the nature of VB
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To map the properties, select Proce
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object in component based developme
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If Len(first) = 0 Or Len(last) = 0
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Figure 10.2 Once you declare a refe
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Private Sub Graphics_PrintIt(Target
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The next example modifies the Print
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End Select End Sub I will show you
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sMsg = "The following errors were e
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Private WithEvents empCLSDemo As cl
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triggered. In that event, I invoke
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Why go to all this trouble? Figure
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object. In a sense, the class modul
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Optimizing Cross-Process Calls As n
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start it in a separate instance of
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this method remotely, and I was for
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.Height = (iIndex * 360) + 1850 .Sh
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All of the code in both the remote
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the data dictionary. I will then le
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number of solutions. Previous Table
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CTRY_NAME VARCHAR (35) NOT NULL, CO
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dd_desc VARCHAR (64), CONSTRAINT PK
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Public when the application opens:
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cannot take an Oracle stored proced
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efficient), I chose to use the sp_l
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' Command object for the stored pro
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End Function When ADO dynamically c
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RETURN ; END IF ; /* If country sta
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FROM data_dic WHERE dd_type = old_d
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Figure 11.3 The Data Dictionary Mai
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data type—its underlying data typ
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CommitTrans Else RollbackTrans End
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any money. At worst, it should at l
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update to Cindy failed but the upda
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UPDATE employee SET emp_salary = 50
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difficult to update. With XML, the
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Raining on and off throughout the
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library in your Visual Basic projec
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ReplaceNode Replaces one node with
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Public WithEvents DownloadTimer As
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Sunny and hot. Raining on a
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Of course, it would be useful to ge
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Recursion is a powerful programming
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Dim Index As Integer Dim tempNode A
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End Sub You could create a simple X
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Figure 12.4 A DTD makes it much eas
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The DTD is contained as part of th
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In addition to enumerated lists, th
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Skies will be clear and warm today,
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which relies heavily on line breaks
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&ALABAMA; &ALASKA; &ARIZONA; ... &W
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can also leverage the powers of DHT
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information, usually a structured s
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somewhat in sales. IIS introduced A
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client side scripting is fully visi
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happening than just the creation of
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Cookies A collection of cookies tha
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8. Select the WeatherSummary object
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for all these possible additional p
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• Query strings have a limit of 1
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eturns it as a formatted string. Fu
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The Daily Post As mentioned previou
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4. Double-click the weatherSubmitFo
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If Request.Form("Forecast")="" then
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shows the actual Web event connecti
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in the record are modified and then
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the list of all states, ordered by
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Response.Write "" Response.Write Re
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same format as a rainfall map. A We
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still using Internet Explorer 3.x a
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Figure 14.5 The standard Properties
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Figure 14.10). Notice that the docu
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The highlighted code in Listing 14.
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CtrlKey Boolean True if the Ctrl ke
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collections, many of which are cove
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ClearInterval(timerID as Long) Clea
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Prompt(msg as String, defaultStr as
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OuterText=textString OuterText=“T
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Mouse Data The STYLE=“positio
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as a or paragraph element, accumul
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Dim expn As String expn = TextData
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uffer = buffer + expn WriteLn = exp
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Dim rowOS as COStream 'Set the dest
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example, if you wish to retrieve th
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Dim cell As HTMLTableCell Dim row A
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While on the subject of the parentW
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Understanding Input Text boxes and
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High Temperature:° F Low Tempe
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For index = 0 To lbCtrl.Length - 1
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Exit For End If Next RS.Close conn.
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State = States.Value Set WeatherTab
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Scrollbars Built into containers Th
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A little searching reveals that, in
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Set opt = Document.createElement("O
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Figure 15.1 The Project Properties
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HSPACE=0 > 2. Create a new DHTML
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loop Img.loop=3 Indicates the numbe
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useMap Img.useMap=“#MyMap” Prov
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there are times (especially with We
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associating code as with ExecFuncti
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tools. The tag demonstrates both t
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style rules that you need, as shown
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posLeft, MyDiv.style.posLeft=20 Set
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This is some text This is anoth
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sheet’s rule. Listing 15.7 The Ge
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slt=document.parentWindow.confirm("
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Answer=window.showModalDialog(URL,a
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Visual Basic 6 includes two new use
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ibliography at the end of this chap
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The calendar object is de
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Comment.Value = Replace(RS("Comment
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goods at all stages of production,
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DEPT_LOC_ID CHAR (3) NOT NULL, DEPT
Page 763 and 764: ALTER TABLE LINE_ITEM ADD CONSTRAIN
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Page 767 and 768: COMMIT, ROLLBACK, And LOCK ANSI SQL
Page 769 and 770: VAR returns the variance (the squar
Page 771 and 772: RDO is loaded instead. However, whe
Page 773 and 774: Level 2 Conformance Requirements
Page 775 and 776: objects, 374 proxy objects and, 18
Page 777 and 778: B Application Wizard, 125, 619 Appl
Page 779 and 780: C Bound controls, 202 Boyce-Code no
Page 781 and 782: doConnection object, 235 rdoResults
Page 783 and 784: Connection object, 278 parameters,
Page 785 and 786: Microsoft Jet and, 105 object cross
Page 787 and 788: QueryTimeOut property, 159 RecordsA
Page 789 and 790: Debug mode, 618 DECIMAL (38) data t
Page 791 and 792: E Documents collection, 138, 168-16
Page 793 and 794: F properties, 288 Source property,
Page 795 and 796: G FLOATING POINT data type, 46 Floa
Page 797 and 798: I Hello World application, 511-514,
Page 799 and 800: delegation, 122 reuse, 121-122 Inhe
Page 801 and 802: doResultset object, 245-246 RecordS
Page 803 and 804: N MIN function, 79, 80 Minimum ODBC
Page 805 and 806: O NodeValue property, 472 NoMatch p
Page 807 and 808: P OpenSchema method, 284, 324, 327-
Page 809 and 810: Q prop_type string, 148 prop_val st
Page 811 and 812: licensing fees, 35 Lotus Approach,
Page 813: doCreateEnvironment property (rdoEn
Page 817 and 818: ValidationText property, 196 Record
Page 819 and 820: S ResultChanged event (rdoResultset
Page 821 and 822: Snapshot-type record set, 189 SNF.
Page 823 and 824: T Strings, 45 XML attribute values
Page 825 and 826: U Connection object, 165 rdoConnect
Page 827 and 828: W RecordSet object, 196 TableDef ob
Page 829 and 830: X Type property, 151 UserName prope
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