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Catalogs and Tables
5-9
Data2 Table Structure
Bool
Part of
Primary
Key
no
Can be
Set to
Null
no
DataStreamIdentity
WString
yes
no
DataStreamName
WString
no
yes
Index
Int32
yes
no
IsTransient
Timestamp
Bool
Timestamp
no
yes
no
no
Value_BOOL
Bool
no
yes
Value_BSTR
WString
no
yes
Value_CY
Int64
no
yes
Value_DATE
Timestamp
no
yes
Value_I1
Value_R8
Int8
Int16
Int32
Float32
Float64
no
no
no
no
no
yes
yes
yes
yes
yes
Value_UI1
UInt8
no
yes
Value_UI2
UInt16
no
yes
Value_UI4
UInt32
no
yes
ValueEx_Bool
Bool
no
yes
ValueEx_BSTR
WString
no
yes
ValueEx_CY
Int64
no
yes
ValueEx_DATE
Timestamp
no
yes
ValueEx_I1
Int8
no
yes
ValueEx_I2
Int16
no
yes
ValueEx_I4
Int32
no
yes
ValueEx_R4
Float32
no
yes
Column
Data
Type
DataIncompatible
Value_I2
Value_I4
Value_R4
Comments 1
Read only.
Foreign Key to DataStreams
table.
Index of the same time stamp
succession.
Read only.
Variant type of Value is
VT_BOOL.
Variant type of Value is
VT_BSTR.
Variant type of Value is VT_CY
Variant type of Value is
VT_DATE.
Variant type of Value is VT_I1.
Variant type of Value is VT_I2.
Variant type of Value is VT_I4.
Variant type of Value is VT_R4.
Variant type of Value is VT_R8.
Variant type of Value is
VT_UI1.
Variant type of Value is
VT_UI2.
Variant type of Value is
VT_UI4.
Variant type of ValueEx is
VT_BOOL.
Variant type of ValueEx is
VT_BSTR.
Variant type of ValueEx is
VT_CY.
Variant type of ValueEx is
VT_DATE.
Variant type of ValueEx is
VT_I1.
Variant type of ValueEx is
VT_I2.
Variant type of ValueEx is
VT_I4.
Variant type of ValueEx is
VT_R4.