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ASP.NET Web PDF Document Viewer/Editor Control Library

no rows selected we only stored six DEPTNO values per block now, leaving sufficient room for all of the EMP data to be stored on the same block with their corresponding DEPT records. Here is a bit of puzzle to amaze and astound your friends with. Many people mistakenly believe a rowid uniquely identifies a row in a database, and that given a rowid you can tell what table the row came from. In fact, you cannot. You can and will get duplicate rowids from a cluster. For example, after executing the preceding code you should find: ops$tkyte%ORA11GR2> select rowid from emp 2 intersect 3 select rowid from dept; ROWID -----------------AAAWy1AAEAAAAILAAA AAAWy1AAEAAAAILAAB AAAWy1AAEAAAAIsAAD AAAWy1AAEAAAAIsAAE AAAWy1AAEAAAAIsAAF 36 rows selected. Every rowid assigned to the rows in DEPT has been assigned to the rows in EMP as well. That is because it takes a table and row ID to uniquely identify a row. The rowid pseudo-column is unique only within a table. I also find that many people believe the cluster object to be an esoteric object that no one really uses everyone just uses normal tables. In fact, you use clusters every time you use Oracle. Much of the data dictionary is stored in various clusters, for example: sys%ORA11GR2> break on cluster_name sys%ORA11GR2> select cluster_name, table_name 2 from user_tables 3 where cluster_name is not null 4 order by 1; CLUSTER_NAME TABLE_NAME ------------------------------ -----------------------------C_COBJ# CDEF$ CCOL$ C_FILE#_BLOCK# SEG$ UET$ C_MLOG# MLOG$ SLOG$ C_OBJ# SUBCOLTYPE$ NTAB$ REFCON$

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C:\> aximp c:\Windows\System32\Macromed\Flash\Flash9bocx Generated Assembly: C:\ShockwaveFlashObjectsdll Generated Assembly: C:\AxShockwaveFlashObjectsdll If you use ildasmexe to analyze the structure of the generated assemblies, you ll notice that the wrapper of the COM component is contained in ShockwaveFlashObjectsdll and is generated by the tlbimpexe tool; the second assembly simply contains a Windows Forms host for ActiveX components and is configured to host the COM component, exposing the GUI features in terms of the elements of the Windows Forms framework You can test the Flash Player embedded in an interactive F# session: > #I "c:\\" --> Added 'c:\ ' to library include path > #r "AxShockwaveFlashObjectsdll";; --> Referenced 'c:\AxShockwaveFlashObjectsdll' > open AxShockwaveFlashObjects;; > open SystemWindowsForms;; > let f = new Form();; val f : Form > let flash = new AxShockwaveFlash();; val flash : AxShockwaveFlash Binding session to 'c:\AxShockwaveFlashObjectsdll'.. > f.

C_OBJ#_INTCOL# C_RG# C_TOID_VERSION#

OPQTYPE$ ICOLDEP$ VIEWTRCOL$ LIBRARY$ ASSEMBLY$ ATTRCOL$ TYPE_MISC$ COLTYPE$ LOB$ TAB$ CLU$ COL$ ICOL$ IND$ HISTGRM$ RGROUP$ RGCHILD$ PARAMETER$ RESULT$ METHOD$ ATTRIBUTE$ COLLECTION$ TYPE$ TS$ FET$ TSQ$ USER$ SMON_SCN_TIME

Show();; val it : unit = () > flashDock <- DockStyleFill;; val it : unit = () > fControlsAdd(flash);; val it : unit = () > flashLoadMovie(0, "http://laptoporg/img/meshDemo18swf");; val it : unit = () Here you first add to the include path of the fsiexe directory containing the assemblies generated by aximpexe using the #I directive, and then you reference the AxShockwaveFlashObjectsdll assembly using the #r directive The namespace AxShockwaveFlashObjects containing the AxShockwaveFlash class is opened; this is the managed class wrapping the ActiveX control You create an instance of the Flash Player that is now exposed as a Windows Forms control; then you set the Dock property to DockStyleFill to let the control occupy the entire area of the form, and finally you add the control to the form.

 

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