# Functions
CheckHandleExists check whether recordID key exists.
CreateVirtualTable as its name.
FindIndexByColName implements table.Table FindIndexByColName interface.
GetColDefaultValue gets a column default value.
MemoryTableFromMeta creates a Table instance from model.TableInfo.
MockTableFromMeta only serves for test.
NewIndex builds a new Index object.
NewIndexWithBuffer builds a new Index object whit the buffer.
TableFromMeta creates a Table instance from model.TableInfo.
# Structs
MemoryTable implements table.Table interface.
Table implements table.Table interface.
VirtualTable stands for the fake table all its data is in the memory.
# Interfaces
VirtualDataSource is used to extract data from the struct in memory.