diff --git a/CMakeLists.txt b/CMakeLists.txt
index a666e9d..039712a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,7 +11,7 @@ set(SOURCES
 		src/optHandlers/createOperation.cpp
 		src/optHandlers/earnOperation.cpp
 		src/optHandlers/PaymentOperation.cpp
-		)
+		src/database.cpp)
 
 set(HEADERS
 		src/optHandlers/mainOptHandler.h
@@ -20,6 +20,11 @@ set(HEADERS
 		src/optHandlers/createOperation.h
 		src/optHandlers/earnOperation.h
 		src/optHandlers/PaymentOperation.h
-		)
+		src/database.h
+		src/exceptions/helpRequested.h
+		src/exceptions/badValue.h)
 
-add_executable(${PROJECT_NAME} ${SOURCES} ${HEADERS})
\ No newline at end of file
+
+add_executable(${PROJECT_NAME} ${SOURCES} ${HEADERS})
+
+target_link_libraries(${PROJECT_NAME} sqlite3)
diff --git a/src/database.cpp b/src/database.cpp
new file mode 100644
index 0000000..94037d5
--- /dev/null
+++ b/src/database.cpp
@@ -0,0 +1,30 @@
+//
+// Created by quentin on 1/18/23.
+//
+
+#include "database.h"
+#include <sqlite3.h>
+#include <stdexcept>
+
+bool Database::doesAccountExist(const std::string &account, sqlite3 *db) {
+	sqlite3_stmt *stmt;
+	int rc = sqlite3_prepare_v2(db, "SELECT * FROM account WHERE name = ?", -1, &stmt, nullptr);
+	
+	if (rc != SQLITE_OK) {
+		throw std::runtime_error("Failed to create account existing query");
+	}
+	
+	sqlite3_bind_text(stmt, 1, account.c_str(), -1, SQLITE_TRANSIENT);
+	
+	rc = sqlite3_step(stmt);
+	sqlite3_finalize(stmt);
+	
+	if (rc == SQLITE_ROW) {
+		return true;
+	} else if (rc == SQLITE_DONE) {
+		return false;
+	} else {
+		throw std::runtime_error("Failed to step account existing statement.");
+	}
+	
+}
diff --git a/src/database.h b/src/database.h
new file mode 100644
index 0000000..b264552
--- /dev/null
+++ b/src/database.h
@@ -0,0 +1,18 @@
+//
+// Created by quentin on 1/18/23.
+//
+
+#ifndef BUDGET_DATABASE_H
+#define BUDGET_DATABASE_H
+
+
+#include <string>
+#include <sqlite3.h>
+
+class Database {
+public:
+	static bool doesAccountExist(const std::string &account, sqlite3 *db);
+};
+
+
+#endif //BUDGET_DATABASE_H
diff --git a/src/exceptions/badValue.h b/src/exceptions/badValue.h
new file mode 100644
index 0000000..5aef299
--- /dev/null
+++ b/src/exceptions/badValue.h
@@ -0,0 +1,17 @@
+//
+// Created by quentin on 1/18/23.
+//
+
+#ifndef BUDGET_BADVALUE_H
+#define BUDGET_BADVALUE_H
+
+#include <stdexcept>
+
+namespace Budget::Exceptions {
+	class BadValue : public std::runtime_error {
+	public:
+		explicit BadValue(const std::string &what_arg) : std::runtime_error(what_arg) {}
+	};
+}
+
+#endif //BUDGET_BADVALUE_H
diff --git a/src/exceptions/helpRequested.h b/src/exceptions/helpRequested.h
new file mode 100644
index 0000000..2466531
--- /dev/null
+++ b/src/exceptions/helpRequested.h
@@ -0,0 +1,18 @@
+//
+// Created by quentin on 1/18/23.
+//
+
+#ifndef BUDGET_HELPREQUESTED_H
+#define BUDGET_HELPREQUESTED_H
+
+#include <stdexcept>
+
+namespace Budget::Exceptions {
+	class HelpRequested : public std::runtime_error {
+	public:
+		explicit HelpRequested(const std::string &what_arg) : std::runtime_error(what_arg) {}
+	};
+}
+
+
+#endif //BUDGET_HELPREQUESTED_H
diff --git a/src/main.cpp b/src/main.cpp
index f924e29..26a281d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,11 +3,15 @@
 //
 
 #include "optHandlers/mainOptHandler.h"
+#include "exceptions/helpRequested.h"
+#include "exceptions/badValue.h"
 
 #include <pwd.h>
 #include <unistd.h>
 #include <string>
 #include <filesystem>
+#include <sqlite3.h>
+#include <iostream>
 
 
 using namespace Budget;
@@ -15,16 +19,41 @@ using namespace Budget;
 const std::string homeDirectory = getpwuid(getuid())->pw_dir;
 const std::string configD = homeDirectory + "/.config/budget/";
 const std::string storageD = homeDirectory + "/.local/share/budget/";
+const std::string databaseFile = homeDirectory + "/.local/share/budget/budget.sqlite";
+
 
 void createRequiredFolders() {
 	std::filesystem::create_directory(configD);
 	std::filesystem::create_directories(storageD);
-	std::filesystem::create_directories(storageD + "accounts");
 	std::filesystem::create_directories(storageD + "receipts");
 }
 
 int main(int argc, char *argv[]) {
+	sqlite3 *db;
+	int rc;
+	rc = sqlite3_open(databaseFile.c_str(), &db);
+	
+	if (rc != SQLITE_OK) {
+		throw std::runtime_error("Error opening database connection.");
+	}
+	
 	std::vector<char *> args(argv, argv + argc);
-	OptHandlers::MainOptHandler moh(args);
+	try {
+		OptHandlers::MainOptHandler moh(args, db);
+		std::queue<std::unique_ptr<OptHandlers::Operation>> *opts = &moh.operations;
+		
+		while (!opts->empty()) {
+			opts->front()->commit();
+			opts->pop();
+		}
+		
+	} catch (const Budget::Exceptions::HelpRequested &e) {
+		return 0;
+	} catch (const Budget::Exceptions::BadValue &e) {
+		std::cout << e.what() << std::endl;
+		return 1;
+	}
+	
+	
 	return 0;
 }
diff --git a/src/optHandlers/PaymentOperation.cpp b/src/optHandlers/PaymentOperation.cpp
index c2eabc9..83fa4c8 100644
--- a/src/optHandlers/PaymentOperation.cpp
+++ b/src/optHandlers/PaymentOperation.cpp
@@ -10,6 +10,6 @@ void PaymentOperation::commit() {
 	//TODO This function will be called when the action needs to be done
 }
 
-PaymentOperation::PaymentOperation(std::string account) : account(std::move(account)) {
+PaymentOperation::PaymentOperation(sqlite3 *db, std::string account) : Operation(db), account(std::move(account)) {
 
 }
\ No newline at end of file
diff --git a/src/optHandlers/PaymentOperation.h b/src/optHandlers/PaymentOperation.h
index b2b1216..38802ab 100644
--- a/src/optHandlers/PaymentOperation.h
+++ b/src/optHandlers/PaymentOperation.h
@@ -15,7 +15,7 @@ namespace Budget::OptHandlers {
 	public:
 		void commit() override;
 		
-		explicit PaymentOperation(std::string account);
+		explicit PaymentOperation(sqlite3 *db, std::string account);
 		
 		struct Flags : public Operation::Flags {
 			long double value;
diff --git a/src/optHandlers/accountOperation.cpp b/src/optHandlers/accountOperation.cpp
index bd169fb..a2f7db1 100644
--- a/src/optHandlers/accountOperation.cpp
+++ b/src/optHandlers/accountOperation.cpp
@@ -3,15 +3,16 @@
 //
 
 #include "accountOperation.h"
+#include "../database.h"
 
 #include <utility>
 
 using namespace Budget::OptHandlers;
 
 void AccountOperation::commit() {
-	//TODO This function will be called when the action needs to be done
+	Database::doesAccountExist(account, db);
 }
 
-AccountOperation::AccountOperation(std::string account) : account(std::move(account)) {
+AccountOperation::AccountOperation(sqlite3 *db, std::string account) : Operation(db), account(std::move(account)) {
 
 }
diff --git a/src/optHandlers/accountOperation.h b/src/optHandlers/accountOperation.h
index 8c134e7..2399347 100644
--- a/src/optHandlers/accountOperation.h
+++ b/src/optHandlers/accountOperation.h
@@ -14,7 +14,7 @@ namespace Budget::OptHandlers {
 	public:
 		void commit() override;
 		
-		explicit AccountOperation(std::string account);
+		explicit AccountOperation(sqlite3 *db, std::string account);
 		
 		struct Flags : public Operation::Flags {
 			bool del = false;
diff --git a/src/optHandlers/createOperation.cpp b/src/optHandlers/createOperation.cpp
index 549f2de..2f194e0 100644
--- a/src/optHandlers/createOperation.cpp
+++ b/src/optHandlers/createOperation.cpp
@@ -10,6 +10,6 @@ void CreateOperation::commit() {
 	//TODO This function will be called when the action needs to be done
 }
 
-CreateOperation::CreateOperation(std::string account) : account(std::move(account)) {
+CreateOperation::CreateOperation(sqlite3 *db, std::string account) : Operation(db), account(std::move(account)) {
 
 }
diff --git a/src/optHandlers/createOperation.h b/src/optHandlers/createOperation.h
index 6ac7aa5..cee218e 100644
--- a/src/optHandlers/createOperation.h
+++ b/src/optHandlers/createOperation.h
@@ -13,7 +13,7 @@ namespace Budget::OptHandlers {
 	public:
 		void commit() override;
 		
-		explicit CreateOperation(std::string account);
+		explicit CreateOperation(sqlite3 *db, std::string account);
 		
 		struct Flags : public Operation::Flags {
 			std::string description;
diff --git a/src/optHandlers/earnOperation.cpp b/src/optHandlers/earnOperation.cpp
index 2276f52..91ec28d 100644
--- a/src/optHandlers/earnOperation.cpp
+++ b/src/optHandlers/earnOperation.cpp
@@ -10,6 +10,6 @@ void EarnOperation::commit() {
 	//TODO This function will be called when the action needs to be done
 }
 
-EarnOperation::EarnOperation(std::string account) : account(std::move(account)) {
+EarnOperation::EarnOperation(sqlite3 *db, std::string account) : Operation(db), account(std::move(account)) {
 
 }
\ No newline at end of file
diff --git a/src/optHandlers/earnOperation.h b/src/optHandlers/earnOperation.h
index b5df130..c44640b 100644
--- a/src/optHandlers/earnOperation.h
+++ b/src/optHandlers/earnOperation.h
@@ -14,7 +14,7 @@ namespace Budget::OptHandlers {
 	public:
 		void commit() override;
 		
-		explicit EarnOperation(std::string account);
+		explicit EarnOperation(sqlite3 *db, std::string account);
 		
 		struct Flags : public Operation::Flags {
 			long double value;
diff --git a/src/optHandlers/mainOptHandler.cpp b/src/optHandlers/mainOptHandler.cpp
index f5cbc7b..fa25e47 100644
--- a/src/optHandlers/mainOptHandler.cpp
+++ b/src/optHandlers/mainOptHandler.cpp
@@ -6,13 +6,15 @@
 #include "createOperation.h"
 #include "earnOperation.h"
 #include "PaymentOperation.h"
+#include "../exceptions/helpRequested.h"
+#include "../exceptions/badValue.h"
 #include <iostream>
 #include <getopt.h>
 #include <cstring>
 
 using namespace Budget::OptHandlers;
 
-MainOptHandler::MainOptHandler(const std::vector<char *> &_argv) : argv(_argv) {
+MainOptHandler::MainOptHandler(const std::vector<char *> &_argv, sqlite3 *db) : argv(_argv), db(db) {
 	struct option actionLongOpts[] = {
 			{"help",    no_argument,       nullptr, 'h'},
 			{"account", required_argument, nullptr, 'a'},
@@ -29,7 +31,7 @@ MainOptHandler::MainOptHandler(const std::vector<char *> &_argv) : argv(_argv) {
 		switch (opt) {
 			case 'h':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at main");
 			case 'a':
 				accountOptHandler(optarg);
 				break;
@@ -44,7 +46,7 @@ MainOptHandler::MainOptHandler(const std::vector<char *> &_argv) : argv(_argv) {
 				break;
 			case '?':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at main, unknown argument.");
 			default:
 				break;
 		}
@@ -65,7 +67,7 @@ void MainOptHandler::accountOptHandler(std::string account) {
 			{"description",  no_argument,       nullptr, 'D'},
 	};
 	
-	auto acctOperation = std::make_unique<AccountOperation>(account);
+	auto acctOperation = std::make_unique<AccountOperation>(db, account);
 	
 	while (true) {
 		int opt = getopt_long(argv.size(), argv.data(), "ha:c:e:p:dFvD", accountLongOpts, nullptr);
@@ -75,7 +77,7 @@ void MainOptHandler::accountOptHandler(std::string account) {
 		switch (opt) {
 			case 'h':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at account");
 			case 'a':
 			case 'c':
 			case 'e':
@@ -98,7 +100,7 @@ void MainOptHandler::accountOptHandler(std::string account) {
 				break;
 			case '?':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at account, unknown argument.");
 			default:
 				break;
 		}
@@ -117,7 +119,7 @@ void MainOptHandler::createOptHandler(std::string account) {
 			{"description", required_argument, nullptr, 'd'},
 	};
 	
-	auto createOperation = std::make_unique<CreateOperation>(account);
+	auto createOperation = std::make_unique<CreateOperation>(db, account);
 	
 	while (true) {
 		int opt = getopt_long(argv.size(), argv.data(), "ha:c:e:p:d:", createLongOpts, nullptr);
@@ -127,7 +129,7 @@ void MainOptHandler::createOptHandler(std::string account) {
 		switch (opt) {
 			case 'h':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at create");
 			case 'a':
 			case 'c':
 			case 'e':
@@ -140,7 +142,7 @@ void MainOptHandler::createOptHandler(std::string account) {
 				break;
 			case '?':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at create, unknown argument.");
 			default:
 				break;
 		}
@@ -162,7 +164,7 @@ void MainOptHandler::earnOptHandler(std::string account) {
 			{"date",        required_argument, nullptr, 'D'},
 	};
 	
-	auto earnOperation = std::make_unique<EarnOperation>(account);
+	auto earnOperation = std::make_unique<EarnOperation>(db, account);
 	
 	while (true) {
 		int opt = getopt_long(argv.size(), argv.data(), "ha:c:e:p:v:d:r:D:", earnLongOpts, nullptr);
@@ -172,7 +174,7 @@ void MainOptHandler::earnOptHandler(std::string account) {
 		switch (opt) {
 			case 'h':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at earn");
 			case 'a':
 			case 'c':
 			case 'e':
@@ -186,7 +188,7 @@ void MainOptHandler::earnOptHandler(std::string account) {
 				} catch (std::exception const &e) {
 					help();
 					std::cout << "Bad value value" << std::endl;
-					exit(1);
+					throw Budget::Exceptions::BadValue("Bad value, cannot parse to decimal.");
 				}
 				break;
 			}
@@ -203,7 +205,7 @@ void MainOptHandler::earnOptHandler(std::string account) {
 				if (strptime(optarg, "%m/%d/%YT%H:%M:%S", &t) == nullptr) {
 					help();
 					std::cout << "Bad time value" << std::endl;
-					exit(1);
+					throw Budget::Exceptions::BadValue("Bad Value, cannot parse to int.");
 				}
 				ts = mktime(&t);
 				earnOperation->flags.date = (long long) ts;
@@ -211,7 +213,7 @@ void MainOptHandler::earnOptHandler(std::string account) {
 			}
 			case '?':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at earn, unknown argument.");
 			default:
 				break;
 		}
@@ -233,7 +235,7 @@ void MainOptHandler::paymentOptHandler(std::string account) {
 			{"date",        required_argument, nullptr, 'D'},
 	};
 	
-	auto payOperation = std::make_unique<PaymentOperation>(account);
+	auto payOperation = std::make_unique<PaymentOperation>(db, account);
 	
 	while (true) {
 		int opt = getopt_long(argv.size(), argv.data(), "ha:c:e:p:v:d:r:D", paymentLongOpts, nullptr);
@@ -243,7 +245,7 @@ void MainOptHandler::paymentOptHandler(std::string account) {
 		switch (opt) {
 			case 'h':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at payment");
 			case 'a':
 			case 'c':
 			case 'e':
@@ -257,7 +259,7 @@ void MainOptHandler::paymentOptHandler(std::string account) {
 				} catch (std::exception const &e) {
 					help();
 					std::cout << "Bad value value" << std::endl;
-					exit(1);
+					throw Budget::Exceptions::BadValue("Bad value, cannot parse to decimal.");
 				}
 				break;
 			}
@@ -274,7 +276,7 @@ void MainOptHandler::paymentOptHandler(std::string account) {
 				if (strptime(optarg, "%m/%d/%YT%H:%M:%S", &t) == nullptr) {
 					help();
 					std::cout << "Bad time value" << std::endl;
-					exit(1);
+					throw Budget::Exceptions::BadValue("Bad value, time invalid.");
 				}
 				ts = mktime(&t);
 				payOperation->flags.date = (long long) ts;
@@ -282,7 +284,7 @@ void MainOptHandler::paymentOptHandler(std::string account) {
 			}
 			case '?':
 				help();
-				exit(0);
+				throw Budget::Exceptions::HelpRequested("Help requested at payment");
 			default:
 				break;
 		}
diff --git a/src/optHandlers/mainOptHandler.h b/src/optHandlers/mainOptHandler.h
index dcdcf11..0b7984b 100644
--- a/src/optHandlers/mainOptHandler.h
+++ b/src/optHandlers/mainOptHandler.h
@@ -14,7 +14,7 @@
 namespace Budget::OptHandlers {
 	class MainOptHandler {
 	public:
-		explicit MainOptHandler(const std::vector<char *> &argv);
+		explicit MainOptHandler(const std::vector<char *> &argv, sqlite3 *pSqlite3);
 		
 		void help();
 		
@@ -30,6 +30,8 @@ namespace Budget::OptHandlers {
 		void paymentOptHandler(std::string account);
 		
 		const std::vector<char *> &argv;
+		
+		sqlite3 *db;
 	};
 }
 
diff --git a/src/optHandlers/operation.cpp b/src/optHandlers/operation.cpp
index 8f080c6..63f234b 100644
--- a/src/optHandlers/operation.cpp
+++ b/src/optHandlers/operation.cpp
@@ -3,3 +3,5 @@
 //
 
 #include "operation.h"
+
+Budget::OptHandlers::Operation::Operation(sqlite3 *db) : db(db) {}
diff --git a/src/optHandlers/operation.h b/src/optHandlers/operation.h
index 7f9aa36..1d8158b 100644
--- a/src/optHandlers/operation.h
+++ b/src/optHandlers/operation.h
@@ -5,13 +5,20 @@
 #ifndef BUDGET_OPERATION_H
 #define BUDGET_OPERATION_H
 
+#include <sqlite3.h>
+
 namespace Budget::OptHandlers {
 	class Operation {
 	public:
+		explicit Operation(sqlite3 *db);
+		
 		virtual void commit() = 0;
 		
 		struct Flags {
 		};
+	
+	protected:
+		sqlite3 *db{};
 	};
 }