| Name | Type | Nullable | Default value | Comment |
|---|
| CASE_ID | VARCHAR2(6) | N | | The MIMIC-II Case ID (in the waveform database) of the record. |
| RECORD_NAME | VARCHAR2(8) | N | | The name of the WFDB record (within the directory named by the Case ID). |
| AGE | NUMBER(3) | Y | | The age of the patient, as indicated in the WFDB record's header. |
| SEX | VARCHAR2(1) | Y | | The sex of the patient, as indicated in the WFDB record's header. |
| SEGMENTS | NUMBER(3) | Y | | Currently unused. |
| SIGNALS | NUMBER(3) | N | | The number of signals in the WFDB record. |
| SAMPLE_FREQ | NUMBER(38) | Y | | The sampling frequency of the WFDB record. |
| REC_LENGTH | NUMBER(10) | Y | | The length of the WFDB record, in number of sample intervals. |
| COUNTER_FREQ | NUMBER(5,5) | Y | | Currently unused. |
| BASE_COUNT | NUMBER(2,5) | Y | | Currently unused. |
| SAMPLES_PER_SIG | NUMBER(7) | Y | | Currently unused. |
| BASE_TIMESTAMP | TIMESTAMP(2) | Y | | The absolute time of the beginning of the WFDB record. |
| FILENAME | VARCHAR2(100) | Y | | Currently unused. |
| SUBJECT_ID | NUMBER(7) | Y | | The MIMIC-II Subject ID (in the clinical database) of the patient from whom the record was recorded. |
