[DMDB] relational model, relational algebra, SQL very basics

semester4/dmdb/glossary/basics.tex

@@ -1,12 +1,16 @@
 \newglossaryentry{declarative}{
-    name={declarative},
-    description={Describes \textit{what} to achieve, but not how}
+	name={declarative},
+	description={Describes \textit{what} to achieve, but not how}
 }
 \newglossaryentry{imperative}{
-    name={imperative},
-    description={Describes how to achieve something}
+	name={imperative},
+	description={Describes how to achieve something}
 }
 \newglossaryentry{record}{
-    name={record},
-    description={}
+	name={record},
+	description={}
+}
+\newglossaryentry{schema}{
+	name={schema},
+	description={A set of relations}
 }