| Database | Search ID | Owner | Update Date | Description |
|---|
| Operator | Explain | Usage | Example | Description |
|---|---|---|---|---|
| AND | In addition to | term1 AND term2 | human AND rice | Search entries where both human and rice occur |
| OR | Equivalence | term1 OR term2 | human OR rice | Search entries where either human or rice occur |
| NOT | Exclusion | term1 NOT term2 | tp53 NOT human | Search entries contain tp53 but not human |
| " " | Exact match | "term1 term2" | "gene expression" | Search entries contain the exact phrase gene expression |
| * | Wildcard | term* | trans* | Search entries start with trans |
| () | Grouping | (term) | (human OR rice) AND expression | Search entries matching expression along with either human or rice |
