[DMDB] improve links for SQL section

semester4/dmdb/parts/01_sql/02_dml.tex

@@ -1,4 +1,3 @@
-\newpage
 \subsection{Data Manipulation Language (DML)}
 The DML is used to insert, update and delete data from the database.
 

semester4/dmdb/parts/01_sql/03_query-language/00_intro.tex

@@ -1,4 +1,6 @@
+\newpage
 \subsection{Query Language}
+\label{sec:sql-query-language}
 The basic structure of a \sql\ statement is \texttt{SELECT I FROM T WHERE C},
 which corresponds to $\Pi_{\texttt{I}}(\sigma_{\texttt{C}} \texttt{T})$.
 
@@ -38,5 +40,6 @@ To get just the year from an existing date object (or string), use \texttt{YEAR}
 
 The current date, time, year, etc is provided using \texttt{current\_date} (etc).
 
-There are also conditional statements, namely \texttt{CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 ELSE else END}, or of course, more conditions.
-This can even be used inside aggregations, etc!
+There are also conditional statements, namely
+\mint{sql}{CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 ELSE else END}
+or of course, more conditions. This can even be used inside aggregations, etc!

semester4/dmdb/parts/01_sql/03_query-language/01_basic-operators.tex

@@ -25,7 +25,7 @@ The following \sql\ logical operators are available (may not be exhaustive for a
 \shade{gray}{Arithmetic Operators} $+, -, *, /, \%$ are defined as usual.
 
 This also means that we can use \acrshort{sql} as a calculator, for example::
-\mint{sql}|SELECT a * b|
+\mint{sql}|SELECT a * b;|
 
 We can use the arithmetic operators like this:
 \mint{sql}|SELECT Value * 1.1 FROM Data;|

semester4/dmdb/parts/08_quick-overview/04_checklist.tex

@@ -2,7 +2,7 @@
 \subsection{Checklist}
 The following things are typically important to know very well (not exhaustive)
 \begin{todolist}
-    \item SQL (syntax, some concepts, such as using \texttt{WITH} statements often to make the task more approachable), see Section~\ref{sec:sql-basic-ops}
+    \item SQL (syntax, some concepts, such as using \texttt{WITH} statements often to make the task more approachable), see Section~\ref{sec:sql-query-language}
     \item Relational Algebra notation, see Section~\ref{sec:relational-model-logic-algebra}
     \item Functional Dependencies (including Candidate Keys, Super Keys, Closures and minimal covers), see Section~\ref{sec:functional-dependency}
     \item Normal Forms (and their Decomposition / Synthesis Algorithms), see Section~\ref{sec:normal-forms}