public boolean isDatabaseExist(final String database) {
    return getPartitionManager().isDatabaseExist(database);
  }
Check if the specified Database exists

@param database The specified Database
@return True if the DatabaseSchema exists and the Database is not pre-deleted
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/manager/schema/ClusterSchemaManager.java