Description:
Database aspects of Borland Delphi.
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725 Humingbird GPS 72543
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ADOTable connected to PostgreSQL - Can read table but can't write.
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Running Windows XP. Delphi 7 programming environment Installed PostgreSQL. Installed the PostgreSQL OLE Native driver. Linked to PostgreSQL using ADOTable via a connection string I can connect to and view the table BUT if I try to add (post) a record I get a 'Field 'STREET' cannot be modified.' That is I can READ but NOT WRITE to the table.... more »
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SQL Insert versus Table.Append
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I am using a single dbf table which has 100,000 records. currently using the standard TTable component: Table.Append (20 fields)................. Table.Post to add records but I am starting to lose records (it is writing across a network). Simple question. 1.Will using an SQL Component and INSERT INTO statement improve the... more »
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QuickReport / General Concept Problem
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I am trying to produce a report which is an exam. The data structure seemed fairly simple with only two table (in access) designed as follows, where* denotes a primary key: TQuestion (QuestionID*, QuestionNum...etc) TQuesionPart (QuestionID*, Number*, Letter*, Question, Answer...etc) To display these on a quickreport i need the structure... more »
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BAR CODE
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DOES ANYONE KNOW HOW TO PRINT BARCODE FROM A QUICK REPORT IN DELPHI ?
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How to enable scrollbars on DBMemo when set to read-only?
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I am becoming increasingly frustrated with the DBMemo component especially in terms of trying to enable the scrollbars when the component or underlying dataset is set to read-only. My form is displaying a history of transactions, click on a date from a grid, the dbmemo gets updated, but I don't want the user to change... more »
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calculating on the fly
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Dear All, Have an app that requires the user to enter information on 3 tedits and 1 tcombobox. An equation is then used to calculate the relationship between the inputs. However, the users request is not to have a calculate button. They wish the app to calculate the result on the fly. That as the user enters the information.... more »
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