Reads the first record matching the supplied index values.
Reads the primary key for the first matching index entry.
Reads all primary keys matching the supplied index values and optional range.
OptionalkeyRange: KeyRangeCounts records matching the supplied index values and optional range.
OptionalkeyRange: KeyRangeDeletes records matching the supplied index values.
Opens a cursor over the index.
Optionaloptions: OpenCursorOptionsOpens a key-only cursor over the index.
Optionaloptions: OpenCursorOptions
Secondary-index client used for lookup and cursor operations.