ASP.NET Web PDF Document Viewer/Editor Control Library

We also describe how open source projects such as the F# Web Toolkit let you write both parts of Ajax-style client/server applications in F# 15, Working with Data, looks at several dimensions of querying and accessing data from F# You ll first learn how functional programming relates to querying in-memory data structures, especially via the LINQ paradigm supported by NET and F# You ll then look at how to use F# in conjunction with relational databases, particularly through the use of the ADONET and LINQ-to-SQL technologies that are part of the NET Framework 16, Lexing and Parsing, shows how to deal with additional concrete language formats beyond those already discussed in 9 In particular, you will learn how to use the F# tools for generating lexers and parsers from declarative specifications and how to use combinator techniques to build declarative specifications of binary format readers.

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rowid_block_number( rowid ) block_number from t1; X ORA_ROWSCN BLOCK_NUMBER ---------- ---------- -----------1 4919041 508 1 4919041 508 3 4919041 508 3 4919041 508 Notice how the ora_rowscn value changed for all the rows of the table (since they are all in the same database block), even though we updated only one of them Fortunately, Oracle does provide a way to maintain ora_rowscn values at a row level For this, we need to create the underlying table with the rowdependencies option Let s drop and re-create table t1 and insert some data into it, followed by a select of the ora_rowscn values: scott@ORA10G> drop table t1; Table dropped scott@ORA10G> create table t1 ( x number ) rowdependencies; Table created scott@ORA10G> insert into t1 values ( 1 ); 1 row created scott@ORA10G> insert into t1 values ( 2 ); 1 row created scott@ORA10G> insert into t1 values ( 22); 1 row created.

In addition to these specific namespaces, security atoms can be found lurking within XML configuration files, assembly metadata, and various development and configuration tools. While space doesn t permit a complete discussion of these aspects, we ll begin this chapter by briefly examining the following topics: The role of strongly named assemblies Encryption services Role-based security After we provide an initial overview of common .NET security technologies, in the remaining bulk of the chapter we address the details of securing ASP .NET 2.0 web applications using the types within the System.Web.Security namespace.

scott@ORA10G> commit; Commit complete scott@ORA10G> select x, ora_rowscn from t1; X ORA_ROWSCN ---------- ---------1 4920043 2 4920043 22 4920043.

17, Interoperating with C and COM, shows how to use F# and NET to interoperate with software that exports a native API You will learn more about the NET Common Language Runtime itself, how memory management works, and how to use the NET Platform Invoke mechanisms from F# 18, Debugging and Testing F# Programs, shows the primary tools and techniques you can use to eliminate bugs from your F# programs You will learn how to use the NET and Visual Studio debugging tools with F#, how to use F# Interactive for exploratory development and testing, and how to use the NUnit testing framework with F# code..

All rows have the same ora_rowscn values, since they were inserted in the same transaction Let s now update one row as before and rerun the select to query ora_rowscn and the block numbers: scott@ORA10G> update t1 set x = 3 where x =22; 1 row updated scott@ORA10G> commit; Commit complete scott@ORA10G> select x, ora_rowscn, dbms_rowidrowid_block_number( rowid ) block_number from t1; X ORA_ROWSCN BLOCK_NUMBER ---------- ---------- -----------1 4920043 532 2 4920043 532 3 4920046 532 Notice how the ora_rowscn value of the third row is different from the rest (since it was changed), even though it is in the same block as the other rows Thus, we can safely use the ora_rowscn column to proxy for the values in our row as long as the underlying tables are created with the rowdependencies option.

Note Again, the initial part of this chapter is only intended to provide an overview of select core .NET