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# Virtual Table Server (VTS) single and multiple connection functions

Note: The functions for multiple connections have been deprecated.

Use single connection functions if the script connects to only one Virtual Table Server. See Virtual Table Server functions (C, C#, Java) .

Use multiple connection functions if the script connects to more than one server. See Virtual Table Server (VTS) Functions for Multiple Connections (vtc and vts_multi).

Do not mix single connection functions and multiple connection functions in a script.

Most functions can be used in C language, C#, Java, and JavaScript scripts. See the individual function references for details.

The following table shows the multiple connection functions and their single connection parallels.
Multiple connection function | Equivalent single connection function
--- | ---
vtc_clear_column | lrvtc_clear_column
vtc_clear_message | lrvtc_clear_message
vtc_clear_row | lrvtc_clear_row
vtc_column_size | lrvtc_column_size
vtc_connect | lrvtc_connect
Functionality not supported | lrvtc_connect_ex
vtc_create_column | lrvtc_create_column
vtc_disconnect | lrvtc_disconnect
vtc_drop_index | lrvtc_drop_index
vtc_ensure_index | lrvtc_ensure_index
vtc_free | With lrvtc* functions, memory is managed by the infrastructure.
vtc_free_list | With lrvtc* functions, memory is managed by the infrastructure.
vtc_get_last_error | Functionality not supported
vtc_increment | lrvtc_increment
vtc_query_column | lrvtc_query_column
vtc_query_row | lrvtc_query_row
vtc_retrieve_message | lrvtc_retrieve_message
vtc_retrieve_messages1 | lrvtc_retrieve_messages1
vtc_retrieve_row | lrvtc_retrieve_row
vtc_rotate_message | lrvtc_rotate_message
vtc_rotate_messages1 | lrvtc_rotate_messages1
vtc_rotate_row | lrvtc_rotate_row
Functionality not supported | lrvtc_search_row
vtc_send_if_unique | lrvtc_send_if_unique
vtc_send_message | lrvtc_send_message
vtc_send_row1 | lrvtc_send_row1
vtc_update_message | lrvtc_update_message
vtc_update_message_ifequals | lrvtc_update_message_ifequals
vtc_update_row1 | lrvtc_update_row1

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