Add Redshift + Materialized Views

Fix Cassaandra Classification

resources/topic-graph.mmd

@@ -33,15 +33,18 @@ graph TD
         DBT --> DBTR[Replication]
         DBT --> DBTX[Sharding]
       DB --> SQL[SQL]
-        SQL --> PgSQL
-        SQL --> MySQL
-        SQL --> Cassandra
+        SQL --> rSQL[Row-oriented]
+          rSQL --> PgSQL
+          rSQL --> MySQL
+        SQL --> cSQL[Column-oriented]
+          cSQL --> Redshift
       DB --> NoSQL[NoSQL]
         NoSQL --> KV[KeyValue]
           KV --> Rd[Redis]
         NoSQL --> DoS[DocumentStore]
           DoS --> Mng[Mongo]
           DoS --> ES[ElasticSearch]
+        NoSQL --> CS[Cassandra]
     SW --> LD[Ledgers]
 
   SW --> DSi[Distributed Systems]