diff --git a/DRAMSys/traceAnalyzer/businessObjects/phases/phase.h b/DRAMSys/traceAnalyzer/businessObjects/phases/phase.h
index ce474fe8..cca1cf9a 100644
--- a/DRAMSys/traceAnalyzer/businessObjects/phases/phase.h
+++ b/DRAMSys/traceAnalyzer/businessObjects/phases/phase.h
@@ -116,7 +116,7 @@ protected:
     friend class PhaseDependency;
 };
 
-class REQ : public Phase
+class REQ final : public Phase
 {
 public:
     using Phase::Phase;
@@ -136,8 +136,7 @@ protected:
     }
 };
 
-
-class RESP : public Phase
+class RESP final : public Phase
 {
 public:
     using Phase::Phase;
@@ -158,7 +157,7 @@ protected:
 
 };
 /*
-class PREB: public Phase
+class PREB final : public Phase
 {
 public:
     using Phase::Phase;
@@ -173,7 +172,7 @@ protected:
     }
 };
 */
-class PREPB : public Phase
+class PREPB final : public Phase
 {
 public:
     using Phase::Phase;
@@ -188,7 +187,7 @@ protected:
     }
 };
 
-class PRESB : public Phase
+class PRESB final : public Phase
 {
 public:
     using Phase::Phase;
@@ -216,7 +215,7 @@ protected:
     }
 };
 
-class PREAB : public Phase
+class PREAB final : public Phase
 {
 public:
     using Phase::Phase;
@@ -244,7 +243,7 @@ protected:
     }
 };
 /*
-class ACTB : public Phase
+class ACTB final : public Phase
 {
 public:
     using Phase::Phase;
@@ -259,7 +258,7 @@ protected:
     }
 };
 */
-class ACT : public Phase
+class ACT final : public Phase
 {
 public:
     using Phase::Phase;
@@ -274,7 +273,7 @@ protected:
     }
 };
 
-class RD : public Phase
+class RD final : public Phase
 {
 public:
     using Phase::Phase;
@@ -289,7 +288,7 @@ protected:
     }
 };
 
-class RDA : public Phase
+class RDA final : public Phase
 {
 public:
     using Phase::Phase;
@@ -304,7 +303,7 @@ protected:
     }
 };
 
-class WR : public Phase
+class WR final : public Phase
 {
 public:
     using Phase::Phase;
@@ -319,7 +318,7 @@ protected:
     }
 };
 
-class WRA : public Phase
+class WRA final : public Phase
 {
 public:
     using Phase::Phase;
@@ -360,7 +359,7 @@ protected:
     }
 };
 
-class REFAB : public AUTO_REFRESH
+class REFAB final : public AUTO_REFRESH
 {
 public:
     using AUTO_REFRESH::AUTO_REFRESH;
@@ -375,7 +374,7 @@ protected:
     }
 };
 
-class RFMAB : public AUTO_REFRESH
+class RFMAB final : public AUTO_REFRESH
 {
 public:
     using AUTO_REFRESH::AUTO_REFRESH;
@@ -396,8 +395,7 @@ protected:
     }
 };
 
-
-class REFPB : public AUTO_REFRESH
+class REFPB final : public AUTO_REFRESH
 {
 public:
     using AUTO_REFRESH::AUTO_REFRESH;
@@ -408,7 +406,7 @@ protected:
     }
 };
 
-class REFP2B : public AUTO_REFRESH
+class REFP2B final : public AUTO_REFRESH
 {
 public:
     using AUTO_REFRESH::AUTO_REFRESH;
@@ -423,7 +421,7 @@ protected:
     }
 };
 
-class RFMP2B : public AUTO_REFRESH
+class RFMP2B final : public AUTO_REFRESH
 {
 public:
     using AUTO_REFRESH::AUTO_REFRESH;
@@ -444,7 +442,7 @@ protected:
     }
 };
 
-class REFSB : public AUTO_REFRESH
+class REFSB final : public AUTO_REFRESH
 {
 public:
     using AUTO_REFRESH::AUTO_REFRESH;
@@ -459,7 +457,7 @@ protected:
     }
 };
 
-class RFMSB : public AUTO_REFRESH
+class RFMSB final : public AUTO_REFRESH
 {
 public:
     using AUTO_REFRESH::AUTO_REFRESH;
@@ -484,6 +482,8 @@ class PDNAB : public Phase
 {
 public:
     using Phase::Phase;
+    virtual ~PDNAB() = default;
+
 protected:
     QString Name() const override
     {
@@ -508,7 +508,7 @@ protected:
     }
 };
 
-class PDNA : public PDNAB
+class PDNA final : public PDNAB
 {
 public:
     using PDNAB::PDNAB;
@@ -527,6 +527,8 @@ class PDNPB : public Phase
 {
 public:
     using Phase::Phase;
+    virtual ~PDNPB() = default;
+
 protected:
     QString Name() const override
     {
@@ -551,7 +553,7 @@ protected:
     }
 };
 
-class PDNP : public PDNPB
+class PDNP final : public PDNPB
 {
 public:
     using PDNPB::PDNPB;
@@ -570,6 +572,8 @@ class SREFB : public Phase
 {
 public:
     using Phase::Phase;
+    virtual ~SREFB() = default;
+
 protected:
     QString Name() const override
     {
diff --git a/DRAMSys/traceAnalyzer/data/tracedb.cpp b/DRAMSys/traceAnalyzer/data/tracedb.cpp
index 5564d843..6d79a2c8 100644
--- a/DRAMSys/traceAnalyzer/data/tracedb.cpp
+++ b/DRAMSys/traceAnalyzer/data/tracedb.cpp
@@ -334,101 +334,80 @@ GeneralInfo TraceDB::getGeneralInfoFromDB()
 
 CommandLengths TraceDB::getCommandLengthsFromDB()
 {
-    QVariant parameter;
-    parameter = getParameterFromTable("NOP", "CommandLengths");
-    unsigned NOP = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("RD", "CommandLengths");
-    unsigned RD = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("WR", "CommandLengths");
-    unsigned WR = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("RDA", "CommandLengths");
-    unsigned RDA = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("WRA", "CommandLengths");
-    unsigned WRA = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("ACT", "CommandLengths");
-    unsigned ACT = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("PREPB", "CommandLengths");
-    unsigned PREPB;
-    if (parameter.isValid())
+    const std::string table = "CommandLengths";
+
+    auto getLengthFromDb = [=, &table](const std::string &command) -> QVariant
     {
-        PREPB = parameter.toUInt();
-    }
-    else
-    {
-        parameter = getParameterFromTable("PRE", "CommandLengths");
-        if (parameter.isValid())
-            PREPB = parameter.toUInt();
+        QSqlQuery query(("SELECT Length FROM " + table + " WHERE Command = \"" + command + "\"").c_str(), database);
+
+        if (query.first())
+            return query.value(0);
         else
-            PREPB = 1;
-    }
-    parameter = getParameterFromTable("REFPB", "CommandLengths");
-    unsigned REFPB;
-    if (parameter.isValid())
+            return {};
+    };
+
+    auto getCommandLength = [=, &table](const std::string &command) -> unsigned
     {
-        REFPB = parameter.toUInt();
-    }
-    else
-    {
-        parameter = getParameterFromTable("REFB", "CommandLengths");
-        if (parameter.isValid())
-            REFPB = parameter.toUInt();
+        QVariant length = getLengthFromDb(command);
+
+        if (length.isValid())
+            return length.toUInt();
         else
-            REFPB = 1;
-    }
-    parameter = getParameterFromTable("RFMPB", "CommandLengths");
-    unsigned RFMPB = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("REFP2B", "CommandLengths");
-    unsigned REFP2B = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("RFMP2B", "CommandLengths");
-    unsigned RFMP2B = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("PRESB", "CommandLengths");
-    unsigned PRESB = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("REFSB", "CommandLengths");
-    unsigned REFSB = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("RFMSB", "CommandLengths");
-    unsigned RFMSB = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("PREAB", "CommandLengths");
-    unsigned PREAB;
-    if (parameter.isValid())
+        {
+            qDebug() << "CommandLength for" << command.c_str() << "not present in table" << table.c_str()
+                     << ". Defaulting to 1.";
+            return 1;
+        }
+    };
+
+    auto getCommandLengthOrElse = [=, &table](const std::string &command, const std::string &elseCommand) -> unsigned
     {
-        PREAB = parameter.toUInt();
-    }
-    else
-    {
-        parameter = getParameterFromTable("PREA", "CommandLengths");
-        if (parameter.isValid())
-            PREAB = parameter.toUInt();
+        QVariant length = getLengthFromDb(command);
+
+        if (length.isValid())
+            return length.toUInt();
         else
-            PREAB = 1;
-    }
-    parameter = getParameterFromTable("REFAB", "CommandLengths");
-    unsigned REFAB;
-    if (parameter.isValid())
-    {
-        REFAB = parameter.toUInt();
-    }
-    else
-    {
-        parameter = getParameterFromTable("REFA", "CommandLengths");
-        if (parameter.isValid())
-            REFAB = parameter.toUInt();
-        else
-            REFAB = 1;
-    }
-    parameter = getParameterFromTable("RFMAB", "CommandLengths");
-    unsigned RFMAB = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("PDEA", "CommandLengths");
-    unsigned PDEA = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("PDXA", "CommandLengths");
-    unsigned PDXA = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("PDEP", "CommandLengths");
-    unsigned PDEP = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("PDXP", "CommandLengths");
-    unsigned PDXP = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("SREFEN", "CommandLengths");
-    unsigned SREFEN = parameter.isValid() ? parameter.toUInt() : 1;
-    parameter = getParameterFromTable("SREFEX", "CommandLengths");
-    unsigned SREFEX = parameter.isValid() ? parameter.toUInt() : 1;
+        {
+            length = getLengthFromDb(command);
+
+            if (length.isValid())
+                return length.toUInt();
+            else
+            {
+                qDebug() << "CommandLength for" << command.c_str() << "and" << elseCommand.c_str()
+                         << "not present in table" << table.c_str() << ". Defaulting to 1.";
+                return 1;
+            }
+        }
+    };
+
+    unsigned NOP = getCommandLength("NOP");
+    unsigned RD = getCommandLength("RD");
+    unsigned WR = getCommandLength("RD");
+    unsigned RDA = getCommandLength("RDA");
+    unsigned WRA = getCommandLength("WRA");
+    unsigned ACT = getCommandLength("ACT");
+
+    unsigned PREPB = getCommandLengthOrElse("PREPB", "PRE");
+    unsigned REFPB = getCommandLengthOrElse("REFPB", "REFB");
+
+    unsigned RFMPB = getCommandLength("RFMPB");
+    unsigned REFP2B = getCommandLength("REFP2B");
+    unsigned RFMP2B = getCommandLength("RFMP2B");
+    unsigned PRESB = getCommandLength("PRESB");
+    unsigned REFSB = getCommandLength("REFSB");
+    unsigned RFMSB = getCommandLength("RFMSB");
+
+    unsigned PREAB = getCommandLengthOrElse("PREAB", "PREA");
+    unsigned REFAB = getCommandLengthOrElse("REFAB", "REFA");
+
+    unsigned RFMAB = getCommandLength("RFMAB");
+    unsigned PDEA = getCommandLength("PDEA");
+    unsigned PDXA = getCommandLength("PDXA");
+    unsigned PDEP = getCommandLength("PDEP");
+    unsigned PDXP = getCommandLength("PDXP");
+    unsigned SREFEN = getCommandLength("SREFEN");
+    unsigned SREFEX = getCommandLength("SREFEX");
 
     return {NOP, RD, WR, RDA, WRA, ACT, PREPB, REFPB, RFMPB, REFP2B, RFMP2B, PRESB, REFSB, RFMSB,
             PREAB, REFAB, RFMAB, PDEA, PDXA, PDEP, PDXP, SREFEN, SREFEX};
diff --git a/DRAMSys/traceAnalyzer/data/tracedb.h b/DRAMSys/traceAnalyzer/data/tracedb.h
index 8b759f24..0ee3e3cb 100644
--- a/DRAMSys/traceAnalyzer/data/tracedb.h
+++ b/DRAMSys/traceAnalyzer/data/tracedb.h
@@ -115,7 +115,7 @@ private:
     QString pathToDB;
     QSqlDatabase database;
     GeneralInfo generalInfo;
-    CommandLengths commandLengths{};
+    CommandLengths commandLengths;
 
     QSqlQuery insertPhaseQuery;
     QSqlQuery insertTransactionQuery;