Database Indexes

By default, indexes are defined for the following tables: sbyn_appl, sbyn_common_header, sbyn_common_detail, sbyn_enterprise, sbyn_transaction, sbyn_assumedmatch, sbyn_potentialduplicates, sbyn_audit, and sbyn_merge. Index scripts are also created for indexing the fields included in the default blocking query in the Candidate Select file. You can create additional indexes against the database to optimize the searching and matching processes. At a minimum, it is recommended that all combinations of fields used for blocking or matching be indexed. For each query block defined in the blocking query, create an index containing the fields in that block.

The following indexes are automatically created to improve performance when running large reports from the command line or Patient EDM.

CREATE INDEX SBYN_POTENTIALDUPLICATES3 ON SBYN_POTENTIALDUPLICATES (TRANSACTIONNUMBER ASC);

CREATE INDEX SBYN_ASSUMEDMATCH2 ON SBYN_ASSUMEDMATCH (TRANSACTIONNUMBER ASC);

CREATE INDEX SBYN_TRANSACTION4 on SBYN_TRANSACTION (EUID2 ASC, TIMESTAMP ASC);

CREATE INDEX SBYN_TRANSACTION3 on SBYN_TRANSACTION (TIMESTAMP ASC, TRANSACTIONNUMBER ASC);

To improve performance, these four indexes should be dropped prior to performing an initial load or batch load of data. They can be recreated once the load is complete if you are running the provided reports.