code/modules/library/library_datums.dm 
| /datum/borrowbook | Datum used to keep track of who has borrowed what when and for how long. |
|---|---|
| /datum/cachedbook | Datum used to cache the SQL DB books locally in order to achieve a performance gain. |
| /datum/borrowbook | Datum used to keep track of who has borrowed what when and for how long. |
|---|---|
| /datum/cachedbook | Datum used to cache the SQL DB books locally in order to achieve a performance gain. |