const CHAR	szMSO[]					= "MSysObjects";
const CHAR	szMSOShadow[]			= "MSysObjectsShadow";
const CHAR	szMSOIdIndex[]			= "Id";
const CHAR	szMSONameIndex[]		= "Name";
const CHAR	szMSORootObjectsIndex[]	= "RootObjects";

const CHAR	szLVRoot[]				= "LV";
const ULONG cbLVRoot				= sizeof(szLVRoot) - 1;

const CHAR	szTableCallback[]		= "CB";
const ULONG cbTableCallback			= sizeof(szTableCallback) - 1;


struct CDESC							// Column Description
	{
	CHAR	  			*szColName;		// column name
	COLUMNID			columnid;		// hard-coded fid
	JET_COLTYP			coltyp; 		// column type
	JET_GRBIT			grbit;			// flag bits
	};

struct IDESC							// Index Description
	{
	CHAR				*szIdxName;		// index name
	CHAR				*szIdxKeys;		// key string
	JET_GRBIT			grbit;			// flag bits
	};



LOCAL const CDESC	rgcdescMSO[]	=
	{
	//	cluster system objects by table - all related table objects have
	//	the same clustering id, which will be the object id of the table
	"ObjidTable", 		fidMSO_ObjidTable,		JET_coltypLong, 	   	JET_bitColumnNotNULL, 

	//	see SYSOBJ for valid types
	"Type",				fidMSO_Type,			JET_coltypShort,		JET_bitColumnNotNULL,

	//	object id for tables/indexes/LV, columnid for columns
	"Id",				fidMSO_Id,				JET_coltypLong,			JET_bitColumnNotNULL,

	//	table/column/index/LV name
	"Name",					fidMSO_Name,				JET_coltypText,			JET_bitColumnNotNULL,

	//	column type for columns, pgnoFDP for tables/indexes/LV
	"ColtypOrPgnoFDP",		fidMSO_Coltyp,				JET_coltypLong,			JET_bitColumnNotNULL,
	
	//	density for tables/indexes/LV, column length for columns
	"SpaceUsage",			fidMSO_SpaceUsage,			JET_coltypLong,			JET_bitColumnNotNULL,
	
	"Flags",				fidMSO_Flags,				JET_coltypLong,			JET_bitColumnNotNULL,

	//	initial pages for table/LV, code page for columns, localeid for indexes
	"PagesOrLocale",		fidMSO_Pages,				JET_coltypLong,			JET_bitColumnNotNULL,

	//	unused by columns
	"Stats",				fidMSO_Stats,				JET_coltypBinary,		NO_GRBIT,


	//	set TableFlag to TRUE for tables, NULL otherwise
	"RootFlag",				fidMSO_RootFlag,			JET_coltypBit,			NO_GRBIT,

	//  name of the template table for table, callback name for callbacks and columns
	"TemplateTable",		fidMSO_TemplateTable,		JET_coltypText,			NO_GRBIT,
//	"Callback",				fidMSO_Callback,			JET_coltypText,			NO_GRBIT,

	//	COLUMN-specific items
	"RecordOffset",			fidMSO_RecordOffset,		JET_coltypShort,		NO_GRBIT,
	"DefaultValue",			fidMSO_DefaultValue,		JET_coltypBinary,		NO_GRBIT,

	//	INDEX-specific items
	//	max. # of fields in a key is (size of coltypBinary)/(size of JET_COLUMNID) = 255/8 = 31
	"KeyFldIDs",			fidMSO_KeyFldIDs,			JET_coltypBinary,		NO_GRBIT,
	"VarSegMac",		  	fidMSO_VarSegMac,			JET_coltypBinary,		NO_GRBIT,
	"ConditionalColumns",	fidMSO_ConditionalColumns,	JET_coltypBinary,		NO_GRBIT,
	"LCMapFlags",			fidMSO_LCMapFlags,			JET_coltypLong,			NO_GRBIT,
	"TupleLimits",			fidMSO_TupleLimits,			JET_coltypBinary,		NO_GRBIT,

	//  CALLBACK-related items
	//  These are used by columns with callbacks (user-defined default values)
	//  Added in database version 0x620,3
	"CallbackData",			fidMSO_CallbackData,		JET_coltypLongBinary,	JET_bitColumnTagged,
	"CallbackDependencies",	fidMSO_CallbackDependencies,JET_coltypLongBinary,	JET_bitColumnTagged,
	};

LOCAL const ULONG	cColumnsMSO		= sizeof(rgcdescMSO)/sizeof(CDESC);


LOCAL const IDESC	rgidescMSO[]	=
	{
	(CHAR *)szMSOIdIndex, 			"+ObjidTable\0+Type\0+Id\0", 	JET_bitIndexPrimary|JET_bitIndexDisallowNull,
	(CHAR *)szMSONameIndex, 		"+ObjidTable\0+Type\0+Name\0",	JET_bitIndexUnique|JET_bitIndexDisallowNull,

	//	This index is only used to filter out duplicate table names (all root objects
	//	object -- currently only tables -- have the RootFlag field set, all non-root
	//	objects don't set it)
	(CHAR *)szMSORootObjectsIndex,	"+RootFlag\0+Name\0",			JET_bitIndexUnique|JET_bitIndexIgnoreFirstNull
	};

LOCAL const ULONG	cIndexesMSO		= sizeof(rgidescMSO)/sizeof(IDESC);


LOCAL const ULONG	cbMaxDeletedColumnStubName	= 32;
LOCAL const CHAR	szDeletedColumnStubPrefix[]	= "JetStub_";