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< HTML > < HEAD > < TITLE > DBBrowser Help : Remstar ODBC Classes< / TITLE > < / HEAD >
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< BODY BGCOLOR = #C6DFC6 > < CENTER > < IMG SRC = "../help.png/logo.png" WIDTH = 17 HEIGHT = 18 > < / CENTER > < BR > < CENTER > < B > DBBrowser< BR > Mark Johnson, Berlin Germany< BR > mj10777@gmx.net< / B > < HR > < / CENTER >
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< TH > < B > < H3 > < IMG SRC = "../help.png/remstar.png" WIDTH = 125 HEIGHT = 123 > < BR > Remstar ODBC Classes :< BR > The new wxDB::GetColumns() Function< BR > Description< / H3 > < BR > (English)< / B > < / TH >
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< B > Stand: 2000-01-23.01-mj10777< / B > < HR >
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< TABLE BORDER = 1 > < TBODY > < TR >
< TH BGCOLOR = #CCFFFF > < B > There are 2 new wxDB Functions : < / B > < / TH >
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< A NAME = "GETCOLUMNS" >
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< TH BGCOLOR = #FFFFAA > < B > < A HREF = "#GETCOLUMNS" > wxColInf *wxDB::GetColumns(char *tableName, int *numCols, const char *userID)< / A > < / B > < / TH >
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< TH BGCOLOR = #FFFFE0 > < B > This Function stores all (< I > < FONT color = #FF0000 > int numCols) information from the Table (< I > < FONT color = #FF0000 > char *tableName< / I > ).< BR > It returns the result in a < A HREF = "#WXCOLINF" > wxColInf< / A > Stucture (Class)< / B > < / TH >
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< A NAME = "GETKEYFIELDS" > < P >
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< TH BGCOLOR = #FFFFAA > < B > < A HREF = "#GETKEYFIELDS" > int wxDB::GetKeyFields(char *tableName, wxColInf* colInf,int noCols)< / A > < / B > < / TH >
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< TH BGCOLOR = #FFFFE0 > < B > Tries to find out if any (< I > < FONT color = #FF0000 > int noCols< / I > ) of the columns (< I > < FONT color = #FF0000 > wxColInf* colInf< / I > )< BR > in the Table (< I > < FONT color = #FF0000 > char *tableName< / I > ) are < IMG SRC = "../help.png/key.png" WIDTH = 15 HEIGHT = 16 > Primary or < IMG SRC = "../help.png/keyf.png" WIDTH = 15 HEIGHT = 16 > Foreign Keys.< HR > This Function is only called from GetColumns().< / B > < / TH >
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< TABLE BORDER = 1 > < TBODY > < TR >
< TH BGCOLOR = #CCFFFF > < B > There are 4 new wxDB Classes (Structures) : < / B > < / TH >
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< A NAME = "WXDBINF" > < P >
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< TH BGCOLOR = #FFFFAA > < B > < A HREF = "#WXDBINF" > wxDbInf< / A > < / B > < / TH >
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< B > This Class stores all ODBC-Information for a Database :< HR >
Catalog Entry (< I > < FONT color = #FF0000 > char catalog[128+1]< / I > ),< BR >
Schema (< I > < FONT color = #FF0000 > char schema[128+1]< / I > )< BR >
the number of Tables found(< I > < FONT color = #FF0000 > int numTables< / I > )< BR >
and a Pointer (< I > < A HREF = "#WXTABLEINF" > wxTableInf*< / A > < FONT color = #FF0000 > pTableInf< / I > ) Structure is stored.
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< A NAME = "WXTABLEINF" > < P >
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< TH BGCOLOR = #FFFFAA > < B > < A HREF = "#WXTABLEINF" > wxTableInf< / A > < / B > < / TH >
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< B > This Class stores all ODBC-Information about a Table :< HR >
Table-Name (< I > < FONT color = #FF0000 > char tableName[DB_MAX_TABLE_NAME_LEN+1]< / I > ),< BR >
Table-Type (< I > < FONT color = #FF0000 > char tableType[254+1]< / I > ) - "TABLE", "SYSTEM TABLE" etc. ,< BR >
Table-Remarks (< I > < FONT color = #FF0000 > char tableRemarks[254+1]< / I > ),< BR >
the number of Columns found(< I > < FONT color = #FF0000 > int numCols< / I > )< BR >
and a Pointer (< I > < A HREF = "#WXCOLINF" > wxColInf*< / A > < FONT color = #FF0000 > pColInf< / I > ) Structure is stored.
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< A NAME = "WXCOLINF" > < P >
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< TH BGCOLOR = #FFFFAA > < B > < A HREF = "#WXCOLINF" > wxColInf< / A > < / B > < / TH >
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< B > This Class stores all ODBC-Information about a Column :< HR >
Catalog Entry (< I > < FONT color = #FF0000 > char catalog[128+1]< / I > ),< BR >
Schema (< I > < FONT color = #FF0000 > char schema[128+1]< / I > )< BR >
Table-Name (< I > < FONT color = #FF0000 > char tableName[DB_MAX_TABLE_NAME_LEN+1]< / I > ),< BR >
Column-Name (< I > < FONT color = #FF0000 > char colName[DB_MAX_COLUMN_NAME_LEN+1]< / I > ),< BR >
Datatype (from SQL) (< I > < FONT color = #FF0000 > SWORD sqlDataType< / I > ),< BR >
Data-Name(from SQL) (< I > < FONT color = #FF0000 > char typeName[128+1]< / I > ),< BR >
Column size(from SQL) (< I > < FONT color = #FF0000 > SWORD columnSize< / I > ),< BR >
Buffer length(from SQL) (< I > < FONT color = #FF0000 > SWORD bufferLength< / I > ),< BR >
Decimal digits(from SQL) (< I > < FONT color = #FF0000 > short decimalDigits< / I > ),< BR >
numPrecRadix (from SQL) (< I > < FONT color = #FF0000 > short numPrecRadix< / I > ),< BR >
Nullable (from SQL) (< I > < FONT color = #FF0000 > short nullable< / I > ),< BR >
Remarks (< I > < FONT color = #FF0000 > char remarks[254+1]< / I > ),< BR >
Datatype (from wxDB) (< I > < FONT color = #FF0000 > int dbDataType< / I > ),< BR >
Primary-Key (< I > < FONT color = #FF0000 > int PkCol< / I > ) 0=No; 1= First Key, 2 = Second Key etc.,< BR >
Tables that use this Key as a Foreign Key(< I > < FONT color = #FF0000 > char PkTableName[DB_MAX_TABLE_NAME_LEN+1]< / I > ),< BR >
Foreign-Key (< I > < FONT color = #FF0000 > int FkCol< / I > ) 0=No; 1= First Key, 2 = Second Key etc.,< BR >
Table-Name where this Foreign-Key is Primary Key(< I > < FONT color = #FF0000 > char FkTableName[DB_MAX_TABLE_NAME_LEN+1]< / I > ),< BR >
and a Pointer (< I > < A HREF = "#WXCOLFOR" > wxColFor*< / A > < FONT color = #FF0000 > pColFor< / I > ) Structure is stored.
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< A NAME = "WXCOLFOR" > < P >
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< TH BGCOLOR = #FFFFAA > < B > < A HREF = "#WXCOLFOR" > wxColFor< / A > < / B > < / TH >
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< B > This Class stores how this Column should be formatted in a String : < HR >
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Output String (< I > < FONT color = #FF0000 > wxString s_Field< / I > ),< BR >
Formatted Objects (TIMESTAMP needs 7) (< I > < FONT color = #FF0000 > wxString s_Format[7]< / I > ),< BR >
Formatted Objects (< I > < FONT color = #FF0000 > wxString s_Menge[7]< / I > ),< BR >
Formatted Objects (TT MM YYYY HH MM SS m) (< I > < FONT color = #FF0000 > int i_Menge[7]< / I > ),< BR >
National (0=timestamp,1=EU,2=UK,3=International,4=US)< I > < FONT color = #FF0000 > int i_Nation< / I > ),< BR >
Datatype (from wxDB) (< I > < FONT color = #FF0000 > int I_dbDataType< / I > ),< BR >
Datatype (from SQL) (< I > < FONT color = #FF0000 > SWORD i_sqlDataType< / I > ),< HR >
int Format(int Nation, int dbDataType,SWORD sqlDataType,short columnSize,short decimalDigits);< BR >
The Formatted Objects receive Standard Values and Format() is called.< BR >
The Programmers can, if they want something special , change these Values and call Format() again
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< TH BGCOLOR = #FFBBBB > < B > This class is most definitely very much underdeveloped !< BR > It was made so that the DBGrid could be realised.< BR > Changes here are probable. (Suggestions welcomed)< / B > < / TH >
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< TH BGCOLOR = #FFF777 > < B > Well now, < A HREF = "getcolsh.htm" > that makes everything clear< / A > does't it?< / B > < / TH >
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