Move about relational databases to blog website

2 files changed, 8 insertions, 10 deletions

diff --git a/blog/content/notes/index.gmi b/blog/content/notes/index.gmi
index 4c406e81..18311889 100644
--- a/blog/content/notes/index.gmi
+++ b/blog/content/notes/index.gmi
@@ -21,6 +21,7 @@ Notes about some books I like:
 => tech/migadu Migadu
 => tech/ripping Ripping
 => tech/about-apis About APIs
+=> tech/about-relational-databases About relational databases
 
 ### Gadgets
 
diff --git a/programming/about_relational_databases.md b/blog/content/notes/tech/about-relational-databases.gmi
index 464de330..c66a530f 100644
--- a/programming/about_relational_databases.md
+++ b/blog/content/notes/tech/about-relational-databases.gmi
@@ -8,23 +8,20 @@ Actually, the relations in a relational database are the tables.
 
 A relation "relates" a set of values with another set of values.
 
-For example, a relation can relate the name of a person with their birth date and birth place.
-For example:
+For example, a relation can relate the name of a person with their birth date and birth place. For example:
 
-```
 (person name) => (birth date, birth place)
 (Alice) => (1979-12-03, Barcelona)
 (Bob) => (1995-03-04, Paris)
 ...
-```
 
 Many computer languages have similar concepts:
 
-* [Python mapping types such as `dict`](https://docs.python.org/3/library/stdtypes.html#mapping-types-dict)
-* C++ `std::map`
-* Java `java.util.Map`
-* [C# `System.Collections.Generic.Dictionary`](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.dictionary-2?view=net-9.0)
-* [Javascript `Object`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object)
-* [PHP arrays](https://www.php.net/manual/en/language.types.array.php)
+* Python mapping types such as dict
+* C++ std::map
+* Java java.util.Map
+* C# System.Collections.Generic.Dictionary
+* Javascript Object
+* PHP arrays
 
 Relations are a natural concept, so although non-relational data systems exist, most data can be stored as relations.