Entries for "Sum" and "Product".

Fixes isaqb-org/curriculum-foundation#476

docs/1-terms/P/0-structure.adoc

@@ -10,6 +10,7 @@ include::term-performance-efficiency-quality-attribute.adoc[{include_configurati
 include::term-perspective.adoc[{include_configuration}]
 include::term-pikachu.adoc[{include_configuration}]
 include::term-pipe.adoc[{include_configuration}]
+include::term-product.adoc[{include_configuration}]
 include::term-pki.adoc[{include_configuration}]
 include::term-port.adoc[{include_configuration}]
 include::term-portability-quality-attribute.adoc[{include_configuration}]

docs/1-terms/P/term-product.adoc

@@ -0,0 +1,37 @@
+[#term-product]
+
+// tag::EN[]
+==== Product
+
+Product data is data whose values have several, fixed attributes.
+Also known as *records*, *structs*, *tuples* or *and data*.
+
+Example:
+
+An *address* has the following attributes:
+
+- name, and
+- street, and
+- street number, and
+- city, and
+- zip code
+
+// end::EN[]
+
+// tag::DE[]
+==== Produkt
+
+Produktdaten sind solche, deren Werte mehrere, feststehende Attribute
+haben.  Auch als *Records*, *Structs*, *Tupel* oder *Und-Daten* bezeichnet.
+
+Beispiel:
+
+Eine *Adresse* hat die folgenden Attribute:
+
+- Name und
+- Straße und
+- Hausnummer und
+- Stadt und
+- Postleitzahl
+
+// end::DE[]

docs/1-terms/S/0-structure.adoc

@@ -24,6 +24,7 @@ include::term-stable-dependencies-principle.adoc[{include_configuration}]
 include::term-stakeholder.adoc[{include_configuration}]
 include::term-structural-element.adoc[{include_configuration}]
 include::term-structure.adoc[{include_configuration}]
+include::term-sum.adoc[{include_configuration}]
 include::term-symmetric-cryptography.adoc[{include_configuration}]
 include::term-system-of-interest.adoc[{include_configuration}]
 include::term-system.adoc[{include_configuration}]

docs/1-terms/S/term-sum.adoc

@@ -0,0 +1,34 @@
+[#term-sum]
+
+// tag::EN[]
+==== Sum
+
+Sum data is data that can be one of several distinct, but fixed types.
+Also known as *discriminated union*, *dijoint union*,
+*mixed data* or *or data*.
+
+Example:
+
+A *geometric shape* is one of the following:
+
+- a square, or
+- a circle, or
+- a triangle
+
+// end::EN[]
+
+// tag::DE[]
+==== Summe
+
+Summendaten sind solche, bei denen ein Wert zu einem von mehreren
+verschiedenen aber festehenden Typen gehört.  Auch als *direkte Summe*
+oder *gemischte Daten* oder *Oder_Daten* bezeichnet.
+
+Beispiel:
+
+Eine *geometrische Figur* ist eine der folgenden:
+
+- ein Quadrat oder
+- ein Kreis oder
+- ein Dreieck
+// end::DE[]