Merge branch 'main' of github.com:DataTreehouse/chrontext

README.md

@@ -136,7 +136,7 @@ my_db = MyDuckDB()
 ```
 
 ### Defining a virtualized SQL
-We first define a sqlalchemy select query involving the two tables. Chrontext will modify this query when executing hybrid queries.
+We first define a sqlalchemy select query involving the two tables. __It is crucial that we have a column labelled "id" here__. Chrontext will modify this query when executing hybrid queries.
 ```python
 from sqlalchemy import MetaData, Table, Column, bindparam
 metadata = MetaData()
@@ -184,7 +184,7 @@ ex:myWidget1 ct:hasIdentifier "ts1" .
 ```
 In any such resource sql, the `id` column is mandatory. 
 ### Relating the Database to RDF Triples
-Next, we want to relate the rows in this sql, each containing id, timestamp, value to RDF triples, using a template.
+Next, we want to relate the rows in this sql, each containing id, timestamp, value to RDF triples, using a template. __It is crucial to have the column id__.
 ```python
 from chrontext import Prefix, Variable, Template, Parameter, RDFType, Triple, XSD
 ct = Prefix("ct", "https://github.com/DataTreehouse/chrontext#")
@@ -280,4 +280,4 @@ To read more about Chrontext, read the article [Chrontext: Portable Sparql Queri
 ## License
 All code produced since August 1st. 2023 is copyrighted to [Data Treehouse AS](https://www.data-treehouse.com/) with an Apache 2.0 license unless otherwise noted.
 
-All code which was produced before August 1st. 2023 copyrighted to [Prediktor AS](https://www.prediktor.com/) with an Apache 2.0 license unless otherwise noted, and has been financed by [The Research Council of Norway](https://www.forskningsradet.no/en/) (grant no. 316656) and [Prediktor AS](https://www.prediktor.com/) as part of a PhD Degree. The code at this state is archived in the repository at [https://github.com/DataTreehouse/chrontext](https://github.com/DataTreehouse/chrontext).
+All code which was produced before August 1st. 2023 copyrighted to [Prediktor AS](https://www.prediktor.com/) with an Apache 2.0 license unless otherwise noted, and has been financed by [The Research Council of Norway](https://www.forskningsradet.no/en/) (grant no. 316656) and [Prediktor AS](https://www.prediktor.com/) as part of a PhD Degree. The code at this state is archived in the repository at [https://github.com/DataTreehouse/chrontext](https://github.com/DataTreehouse/chrontext).