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Types that define various nongeneric collections of objects, such as lists, queues, and bit arrays Partially covered in the section Using Further F# and NET Data Structures later in this chapter Types that define generic collections See 4 and the section Using Further F# and NET Data Structures later in this chapter Types that are used to implement the runtime and designtime behavior of components and controls See 11 Types that provide the programming model for handling configuration data See 15 Types that represent the ADONET database access architecture See 15 Types that allow you to interact with system processes, event logs, and performance counters See 18 Types that allow access to GDI+ basic graphics functionality More advanced functionality is provided in the System DrawingDrawing2D, SystemDrawingImaging, and System DrawingText namespaces See 11.

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The table itself created a segment in this example: the first row in the output. The primary key constraint created an index segment in this case in order to enforce uniqueness.

Note A unique or primary key constraint may or may not create a new index. If there is an existing index on

Types that define culture-related information, including the language, the country/region, the calendars in use, the format patterns for dates, the currency, the numbers, and the sort order for strings Not covered in this book Types that allow reading and writing files and data streams, as well as types that provide basic file and directory support See 4 for a basic overview Types for playing and accessing sounds and other media formats Not covered in this book NET 30 and later Types to programmatically access many of the protocols used on modern networks See s 2 and 14 for examples and a basic overview Types that retrieve information about assemblies, modules, members, parameters, and other entities in managed code See 9 for a brief overview Types for generating NET code dynamically at run time Types that allow developers to create, store, and manage various culture-specific resources used in an application.

the constrained columns, and these columns are on the leading edge of the index, the constraint can and will use them.

Additionally, each of the LOB columns created two segments: one segment to store the actual chunks of data pointed to by the character large object (CLOB) or binary large object (BLOB) pointer, and one segment to organize them. LOBs provide support for very large chunks of information, up to many gigabytes in size. They are stored in chunks in the lobsegment, and the lobindex is used to keep track of where the LOB chunks are and the order in which they should be accessed. Note that on line 5 of the CREATE TABLE statement I used syntax specific to Oracle 11g Release 2 and above the SEGMENT CREATION IMMEDIATE clause. If you attempt to use that syntax in earlier releases you will receive: ops$tkyte%ORA11GR1> Create table t 2 ( x int primary key, 3 y clob, 4 z blob ) 5 SEGMENT CREATION IMMEDIATE 6 / SEGMENT CREATION IMMEDIATE * ERROR at line 5: ORA-00922: missing or invalid option

See s 7 and 11 for a brief overview Types to interface with the underlying structure of the CLR security system, including base classes for permissions Not covered in this book..

Starting with Oracle9i, there are two methods for managing space in segments: Manual Segment Space Management: You set various parameters such as FREELISTS, FREELIST GROUPS, PCTUSED, and others to control how space is allocated, used, and reused in a segment over time. I will refer to this space management method in this chapter as MSSM, but bear in mind that that is a made-up abbreviation that you will not find widely in the Oracle documentation. Automatic Segment Space Management (ASSM): You control one parameter relating to how space is used: PCTFREE. The others are accepted when the segment is created, but they are ignored.

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