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15.html
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</aside>
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</section>
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<section data-transition="slide" data-background="#b5533c" data-background-transition="convex"> <h3>lampp stack</h3> </section>
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<section data-transition="slide" data-background="#b5533c" data-background-transition="convex"> <h3>lampp stack</h3> Linux & Apache & mysql & php</section>
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<section>
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@@ -75,20 +75,23 @@ MariaDB [(none)]> \q
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<section>
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mysql ist eine „relationale Datenbank”
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<p><cite> Relationale Datenbanken versuchen die Realität in einem Datenmodell abzubilden.</cite>
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<p><blockquote> Relationale Datenbanken versuchen, die Realität in einem Datenmodell abzubilden.</blockquote>
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<ul>
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<li>Jede Zeile einer Tabelle ist ein Datensatz</li>
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<li>Jede Zeile ( Tupel ) besteht aus Attributen ( die Spalten )</li>
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<li>Über Primärschlüssel werden Beziehungen hergestellt</li>
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<li>Jede Zeile ( Tupel ) besteht aus <strong>Attributen</strong> ( die Spalten )</li>
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<li>Über <strong>Primärschlüssel</strong> werden Beziehungen hergestellt</li>
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<li>Eine Datenbank kann viele Tabellen beinhalten</li>
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<li>Die Tabellen stehen in Beziehung ( Relation )</li>
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</ul>
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</section>
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<section>
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<img src="img/relationales_datenbankmodell_beispiel.jpg">
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<p><small style="font-size:.4em">Quelle: http://www.datenbanken-verstehen.de/datenbank-grundlagen/datenbankmodell/relationales-datenbankmodell/</small>
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</section>
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<section>
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<h4>Normalisierung</h4>
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Aufteilung der Attribute (Spalten) in mehrere Relationen ( Tabellen ), so dass eine Form ohne Redundanzen entsteht.
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</section>
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@@ -96,20 +99,214 @@ MariaDB [(none)]> \q
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<img src="img/Aufspaltung_einer_Tabelle_in_zwei_(Beispiel).svg">
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</section>
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<section>
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<table style="font-size: .5em">
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<tr>
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<td>Rg Nr</td>
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<td>Datum</td>
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<td>Name</td>
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<td>Straße</td>
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<td>Ort</td>
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<td>Artikel</td>
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<td>Anzahl</td>
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<td>Preis</td>
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</tr>
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<tr>
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<td>143</td>
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<td>01.04.2018</td>
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<td>Max Müller</td>
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<td>Trumstrasse 4</td>
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<td>75179 Pforzheim</td>
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<td>Bleistift</td>
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<td>1001</td>
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<td>1,00€</td>
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</tr>
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</table>
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</section>
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<section>
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1. Normalform
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<table style="font-size: .5em">
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<tr>
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<td>Rg Nr</td>
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<td>Datum</td>
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<td>Vor Name</td>
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<td>Nach Name</td>
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<td>Straße</td>
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<td>Hausnr</td>
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<td>PLZ</td>
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<td>Ort</td>
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<td>Artikel</td>
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<td>Anzahl</td>
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<td>Preis</td>
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</tr>
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<tr>
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<td>143</td>
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<td>01.04.2018</td>
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<td>Max</td>
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<td>Müller</td>
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<td>Trumstrasse</td>
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<td> 4</td>
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<td>75179</td>
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<td> Pforzheim</td>
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<td>Bleistift</td>
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<td>1001</td>
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<td>1,00€</td>
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</tr>
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</table>
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</section>
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<section>
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<table style="font-size: .5em">
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<tr>
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<td>Rg Nr</td>
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<td>Datum</td>
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<td>Vor Name</td>
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<td>Nach Name</td>
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<td>Straße</td>
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<td>Hausnr</td>
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<td>PLZ</td>
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<td>Ort</td>
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<td>Artikel</td>
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<td>Anzahl</td>
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<td>Preis</td>
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</tr>
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<tr>
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<td>144</td>
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<td>01.04.2018</td>
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<td>Max</td>
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<td>Müller</td>
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<td>Trumstrasse</td>
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<td> 4</td>
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<td>75179</td>
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<td> Pforzheim</td>
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<td>Bleistift</td>
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<td>1001</td>
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<td>1,00€</td>
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</tr>
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<tr>
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<td>145</td>
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<td>01.04.2018</td>
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<td>Max</td>
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<td>Müller</td>
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<td>Trumstrasse</td>
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<td> 4</td>
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<td>75179</td>
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<td> Pforzheim</td>
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<td>Tüte</td>
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<td>1001</td>
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<td>0,10€</td>
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</tr>
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<tr>
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<td>146</td>
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<td>01.04.2018</td>
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<td>Max</td>
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<td>Müller</td>
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<td>Trumstrasse</td>
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<td> 4</td>
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<td>75179</td>
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<td> Pforzheim</td>
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<td>Ratzefummel</td>
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<td>1001</td>
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<td>1,50€</td>
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</tr>
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</table>
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</section>
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<section>
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Kunden
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<table style="font-size: .5em">
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<tr>
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<td>ID</td>
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<td>Vor Name</td>
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<td>Nach Name</td>
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<td>Straße</td>
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<td>Hausnr</td>
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<td>PLZ</td>
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<td>Ort</td>
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</tr>
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<tr>
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<td>1234</td>
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<td>Max</td>
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<td>Müller</td>
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<td>Trumstrasse</td>
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<td> 4</td>
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<td>75179</td>
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<td> Pforzheim</td>
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</tr>
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</table>
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<hr>
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<div>
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Rechnungen:
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<table style="font-size: .5em">
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<tr>
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<td>Rg Nr</td>
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<td>Datum</td>
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<td>KundenID</td>
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<td>Artikel</td>
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<td>Anzahl</td>
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<td>Preis</td>
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</tr>
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<tr>
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<td>144</td>
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<td>01.04.2018</td>
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<td>1234</td>
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<td>Bleistift</td>
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<td>1001</td>
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<td>1,00</td>
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</tr>
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<tr>
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<td>145</td>
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<td>01.04.2018</td>
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<td>1234</td>
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<td>Tüte</td>
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<td>12</td>
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<td>0,10</td>
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</tr>
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<tr>
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<td>146</td>
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<td>01.04.2018</td>
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<td>1234</td>
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<td>Ratzefummel</td>
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<td>32</td>
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<td>1,50</td>
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</tr>
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</table>
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</div>
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</section>
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<section>
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<img src="img/Wp_Normal_1_301208_165800.JPG">
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</section>
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<section>
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Verbindung aufnehmen:
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<pre><code class="bash">~$ sudo mysql
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# oder:
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~$ mysql -u BENUTZERNAME -p -h localhost
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</code></pre>
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</code></pre>
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<ul>
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<li class="fragment ">-u : Username</li>
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<li class="fragment ">-p : Passwort abfragen</li>
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<li class="fragment ">-h : Host</li>
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</ul>
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</section>
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<section>Datenbank erstellen
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<pre><code class="sql">CREATE DATABASE IF NOT EXISTS test;
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<pre style="font-size:.4em"><code class="sql">CREATE DATABASE IF NOT EXISTS test;
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USE test;
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@@ -195,6 +392,86 @@ Query OK, 1 row affected (0.00 sec)
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Rows matched: 1 Changed: 1 Warnings: 0</code></pre>
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</section>
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<section>
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Speicherort: <pre><code>/var/lib/mysql</code></pre>
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Konfiguration <pre><code>/etc/mysql/my.cnf</code></pre>
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</section>
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<section>
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Andere Datenbanken:
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<p><ul>
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<li class="fragment ">PostgreSql</li>
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<li class="fragment ">SQLite</li>
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<li class="fragment ">Redis</li>
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<li class="fragment ">MongoDB</li>
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</ul>
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</section>
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<section data-transition="slide" data-background="#b5533c" data-background-transition="convex"> <h3>Apache Webserver</h3></section>
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<section>
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<ul>
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<li>Apache ist der meistgenutzte (?) Webserver</li>
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<li class="fragment ">Apache beantwortet http Requests. </li>
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<li class="fragment ">Punkt.</li>
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<li class="fragment ">kennt Module -> Funtionserweiterung</li>
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<li class="fragment ">interpretiert versch. Script-Sprachen über Module</li>
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<li class="fragment "><a href="https://de.wikipedia.org/wiki/Apache_HTTP_Server#Module">Liste der Module</a></li>
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<li class="fragment ">php, ruby, perl, lua, JavaScript, .net .....</li>
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</ul>
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</section>
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<section>
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<ul>
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<li>aktuelle Version 2.3 ( deswegen apache2 )</li>
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<li class="fragment ">Standard Speicherort f. Webseiten: /var/www/html</li>
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<li class="fragment ">Aufruf per Browser : <br>http://localhost/ <br>http://SERVER-IP_ODER_NAME/</li>
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<li class="fragment ">Standardmässig wird <code>index.html</code> ausgeliefert</li>
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<li class="fragment ">wenn nicht vorhanden Liste des Verz. Inhalt</li>
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<li class="fragment ">Steuerung über <br><code>systemctl start | stop | restart | reload | force-reload apache2</code> </li>
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</ul>
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</section>
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<section>
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<h4>Konfiguration</h4>
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<ul>
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<li class="fragment "><code>/etc/apache2/apache2.conf</code></li>
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<li class="fragment ">Zusätzliche conf Files: <br><code>/etc/apache2/conf-available/</code></li>
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<li class="fragment ">Einzelne Webseiten ( vhosts ) <br><code>/etc/apache2/sites-available/</code></li>
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<li class="fragment ">per Verzeichnis: <code>.htaccess</code></li>
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</ul>
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</section>
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<section>
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De-/ Aktivieren einer Zusätzlichen Konfigurationsdatei <pre><code class="bash">~$ sudo a2enconf NAME_DER_DATEI.conf
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~$ sudo a2disconf NAME_DER_DATEI.conf </code></pre>
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De-/ Aktivieren einer Zusätzlichen Webseite <pre><code class="bash">~$ sudo a2ensite MEINE_WEBSEITE.conf
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~$ sudo a2dissite MEINE_WEBSEITE.conf </code></pre>
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<small>Diese beiden Befehle machen Symlinks in die Ordner <br><code>/etc/apache/[ conf | site ]-enabled</code></small>
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<hr>
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<p>Nach Änderungen in diesen Dateien: <pre><code class="bash">~$ sudo systemctl reload apache2</code></pre>
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</section>
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<section>
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<h4>Virtual Hosts</h4>
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<div>Es ist möglich, von einem Server verschiedene Domains auszuliefern mit sog. Virtual Hosts.</div>
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<p>Beispiel:: <a href="beispiele/15/schubertdaniel.conf">beispiele/15/schubertdaniel.conf</a>
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</section>
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<section>
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<span style="color: orange">Aufgabe:</span> <p>Erstellt eine Webseite namens omikron, die per <p><code>http://localhost/omikron</code> <br>aus dem Ordner <p><code>/var/www/html/omikron</code> <br>ausgeliefert wird.
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</section>
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<section><span style="color: orange">Aufgabe:</span> <p>Verlegt die Wordpress Installation nach <code>/home/NUTZERNAME/www/wordpress</code></section>
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<!--
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<section>
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Reference in New Issue
Block a user