diff --git a/clang-format.txt b/clang-format.txt
new file mode 100644
index 0000000..a600edb
--- /dev/null
+++ b/clang-format.txt
@@ -0,0 +1,192 @@
+BasedOnStyle: Google
+
+AccessModifierOffset: -4
+
+AlignAfterOpenBracket: BlockIndent
+AlignArrayOfStructures: Right
+AlignConsecutiveAssignments:
+  Enabled: false
+AlignConsecutiveBitFields:
+  Enabled: false
+AlignConsecutiveDeclarations:
+  Enabled: false
+AlignConsecutiveMacros: AcrossEmptyLines
+AlignEscapedNewlines: Left
+AlignOperands: Align
+AlignTrailingComments: true
+
+AllowAllArgumentsOnNextLine: false
+AllowAllParametersOfDeclarationOnNextLine: false
+AllowShortBlocksOnASingleLine: Empty
+AllowShortCaseLabelsOnASingleLine: true
+AllowShortEnumsOnASingleLine: true
+AllowShortFunctionsOnASingleLine: Empty
+AllowShortIfStatementsOnASingleLine: WithoutElse
+AllowShortLambdasOnASingleLine: All
+AllowShortLoopsOnASingleLine: true
+
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: Yes
+
+BinPackArguments: false
+BinPackParameters: false
+
+BitFieldColonSpacing: Both
+
+BraceWrapping:
+  AfterCaseLabel: false
+  AfterClass: false
+  AfterControlStatement: Never
+  AfterEnum: false
+  AfterFunction: false
+  AfterNamespace: false
+  AfterStruct: false
+  AfterUnion: false
+  AfterExternBlock: false
+  BeforeCatch: false
+  BeforeElse: false
+  BeforeLambdaBody: false
+  BeforeWhile: false
+  IndentBraces: false
+  SplitEmptyFunction: false
+  SplitEmptyNamespace: false
+  SplitEmptyRecord: false
+
+BracedInitializerIndentWidth: 4
+
+# BreakAdjacentStringLiterals: true
+BreakAfterAttributes: Never
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Custom
+BreakBeforeConceptDeclarations: Always
+BreakBeforeInlineASMColon: OnlyMultiline
+BreakBeforeTernaryOperators: false
+BreakConstructorInitializers: AfterColon
+BreakInheritanceList: AfterColon
+BreakStringLiterals: false
+
+ColumnLimit: 140
+
+CompactNamespaces: false
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+
+Cpp11BracedListStyle: true
+
+DerivePointerAlignment: false
+
+EmptyLineAfterAccessModifier: Never
+EmptyLineBeforeAccessModifier: Always
+
+ExperimentalAutoDetectBinPacking: true
+
+FixNamespaceComments: true
+
+IncludeBlocks: Regroup
+IncludeCategories:
+  - Regex: '^".+\.(h|hpp)"$'
+    Priority: 1
+  - Regex: '^<[a-z0-9_]+\.h>$'
+    Priority: 2
+  - Regex: '^<[a-z0-9_]+>$'
+    Priority: 3
+  - Regex: '^<boost/.*>$'
+    Priority: 4
+  - Regex: '^<expected/.*>$'
+    Priority: 5
+  - Regex: '^<fmt/.*>$'
+    Priority: 6
+  - Regex: '^<nlohmann/.*>$'
+    Priority: 7
+  - Regex: '^<range-v3/.*>$'
+    Priority: 8
+  - Regex: '^<catch2/.*>$'
+    Priority: 9
+  - Regex: '^<unicode/.*>$'
+    Priority: 10
+  - Regex: '^<cppbase/.*>$'
+    Priority: 11
+  - Regex: '^<sqlitecpp/.*>$'
+    Priority: 12
+  - Regex: '^<ikarus/.*>$'
+    Priority: 13
+
+IndentAccessModifiers: false
+IndentCaseBlocks: false
+IndentCaseLabels: false
+IndentExternBlock: NoIndent
+IndentGotoLabels: false
+IndentPPDirectives: None
+IndentRequiresClause: true
+IndentWidth: 4
+IndentWrappedFunctionNames: false
+InsertBraces: true
+InsertNewlineAtEOF: true
+InsertTrailingCommas: Wrapped
+
+IntegerLiteralSeparator:
+  Binary: -1
+  Decimal: 3
+  Hex: -1
+
+KeepEmptyLinesAtEOF: false
+KeepEmptyLinesAtTheStartOfBlocks: false
+
+LambdaBodyIndentation: Signature
+Language: Cpp
+
+LineEnding: LF
+
+MaxEmptyLinesToKeep: 1
+
+NamespaceIndentation: None
+
+PPIndentWidth: -1
+PackConstructorInitializers: Never
+
+PointerAlignment: Middle
+QualifierAlignment: Right
+# QualifierOrder: [ 'friend', 'constexpr', 'inline', 'static', 'type', 'const', 'volatile' ]
+ReferenceAlignment: Middle
+
+ReflowComments: true
+RemoveBracesLLVM: false
+RemoveParentheses: MultipleParentheses
+RemoveSemicolon: true
+
+RequiresClausePosition: OwnLine
+RequiresExpressionIndentation: OuterScope
+
+SeparateDefinitionBlocks: Always
+
+SortIncludes: CaseInsensitive
+SortUsingDeclarations: LexicographicNumeric
+
+SpaceAfterCStyleCast: false
+SpaceAfterLogicalNot: false
+SpaceAfterTemplateKeyword: false
+SpaceAroundPointerQualifiers: Both
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCaseColon: false
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: false
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceBeforeSquareBrackets: false
+SpaceInEmptyBlock: false
+SpaceInEmptyParentheses: false
+SpacesInAngles: false
+SpacesInCStyleCastParentheses: false
+SpacesInConditionalStatement: false
+SpacesInContainerLiterals: false
+SpacesInLineCommentPrefix:
+  Minimum: 1
+  Maximum: 1
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard: c++20
+
+TabWidth: 4
+UseTab: Never
diff --git a/src/objects/blueprint.cpp b/src/objects/blueprint.cpp
index c8bf1e5..c15c7bc 100644
--- a/src/objects/blueprint.cpp
+++ b/src/objects/blueprint.cpp
@@ -27,7 +27,7 @@ IkarusBlueprint * ikarus_blueprint_create(struct IkarusProject * project, char c
 }
 
 void ikarus_blueprint_delete(IkarusBlueprint * blueprint) {
-    ikarus::util::delete_object(blueprint->project, blueprint);
+    ikarus::util::delete_object(blueprint);
 }
 
 void ikarus_blueprint_get_properties(
diff --git a/src/objects/entity.cpp b/src/objects/entity.cpp
index ce5d853..80d047e 100644
--- a/src/objects/entity.cpp
+++ b/src/objects/entity.cpp
@@ -2,20 +2,36 @@
 
 #include <cppbase/strings.hpp>
 
+#include <objects/blueprint.hpp>
+#include <objects/util.hpp>
 #include <persistence/function_context.hpp>
 #include <persistence/project.hpp>
 
 IkarusEntity * ikarus_entity_create(struct IkarusProject * project, char const * name) {
-    LOG_INFO("creating new entity");
-
-    LOG_DEBUG("project={}; name={}", project->get_path().c_str(), name);
-
-    auto * ctx = project->get_function_context();
-
-    if (cppbase::is_empty_or_blank(name)) {
-        ctx->set_error("name is empty or blank", true, IkarusErrorInfo_Source_Client, IkarusErrorInfo_Type_Client_Input);
-        return nullptr;
-    }
-
-    // TODO
+    return ikarus::util::insert_object(
+               project,
+               IkarusObjectType_Entity,
+               name,
+               [](auto * db, IkarusId id) { return db->execute("INSERT INTO `entities`(`id`) VALUES(?)", id); },
+               [project](IkarusId id) { return project->get_entity(id); }
+    ).unwrap_value_or(nullptr);
 }
+
+void ikarus_entity_delete(IkarusEntity * entity) {
+    ikarus::util::delete_object(entity);
+}
+
+bool ikarus_entity_is_linked_to_blueprint(IkarusEntity const * entity, struct IkarusBlueprint const * blueprint) {
+    return ikarus::util::check_exists(
+               entity,
+               ikarus::util::ExistsQueryData<IkarusId>{
+                   .table_name = "entity_blueprint_links",
+                   .where_field_name = "blueprint",
+                   .where_field_value = blueprint->id,
+                   .relation_desc = "linked blueprints"
+               }
+    )
+        .unwrap_value_or(false);
+}
+
+bool ikarus_entity_link_to_blueprint(IkarusEntity * entity, struct IkarusBlueprint * blueprint) {}
diff --git a/src/objects/properties/property.cpp b/src/objects/properties/property.cpp
index bea1a0d..d28275d 100644
--- a/src/objects/properties/property.cpp
+++ b/src/objects/properties/property.cpp
@@ -23,10 +23,6 @@ IkarusProperty::Data const & IkarusProperty::get_data() const {
 }
 
 cppbase::Result<IkarusPropertyType, sqlitecpp::SingleQueryError> IkarusProperty::get_property_type(IkarusProject * project, IkarusId id) {
-    LOG_DEBUG("fetching unboxed property type");
-
-    LOG_VERBOSE("project={};property={}", project->get_path().c_str(), id);
-
     auto * ctx = project->get_function_context();
 
     VTRY(
@@ -45,10 +41,6 @@ cppbase::Result<IkarusPropertyType, sqlitecpp::SingleQueryError> IkarusProperty:
 }
 
 IKA_API void ikarus_property_delete(IkarusProperty * property) {
-    LOG_INFO("deleting property");
-
-    LOG_VERBOSE("project={};property={}", property->project->get_path().c_str(), property->id);
-
     auto * ctx = property->project->get_function_context();
 
     TRYRV(, property->project->get_db()->execute("DELETE FROM `objects` WHERE `id` = ?", property->id).on_error([ctx](auto const & err) {
@@ -60,24 +52,14 @@ IKA_API void ikarus_property_delete(IkarusProperty * property) {
         );
     }));
 
-    LOG_VERBOSE("property was successfully deleted from database, freeing");
-
     property->project->uncache(property);
-
-    LOG_VERBOSE("successfully deleted property");
 }
 
 IkarusPropertyType ikarus_property_get_type(IkarusProperty const * property) {
-    LOG_VERBOSE("fetching property type");
-
     return IkarusProperty::get_property_type(property->project, property->id).unwrap_value_or(IkarusPropertyType_Toggle);
 }
 
 IkarusPropertySource const * ikarus_property_get_source(IkarusProperty const * property) {
-    LOG_VERBOSE("fetching property source");
-
-    LOG_VERBOSE("project={};property={}", property->project->get_path().c_str(), property->id);
-
     auto * ctx = property->project->get_function_context();
 
     VTRYRV(
@@ -112,10 +94,6 @@ IkarusPropertySource const * ikarus_property_get_source(IkarusProperty const * p
 }
 
 IkarusValue * ikarus_property_get_default_value(IkarusProperty const * property) {
-    LOG_VERBOSE("fetching property default value");
-
-    LOG_VERBOSE("project={};property={}", property->project->get_path().c_str(), property->id);
-
     auto * ctx = property->project->get_function_context();
 
     VTRYRV(
diff --git a/src/objects/util.hpp b/src/objects/util.hpp
index 0ba4b37..2779478 100644
--- a/src/objects/util.hpp
+++ b/src/objects/util.hpp
@@ -28,10 +28,6 @@ template<typename InsertFunction, typename ObjectFactory>
 ) {
     auto const * object_type_str = ikarus_object_type_to_string(type);
 
-    LOG_INFO("creating new {}", object_type_str);
-
-    LOG_DEBUG("project={}; name={}", project->get_path().c_str(), name);
-
     auto * ctx = project->get_function_context();
 
     if (cppbase::is_empty_or_blank(name)) {
@@ -43,14 +39,10 @@ template<typename InsertFunction, typename ObjectFactory>
         auto const id,
         project->get_db()
             ->transact([&](auto * db) -> cppbase::Result<IkarusId, sqlitecpp::TransactionError> {
-                LOG_VERBOSE("creating {} in objects table", object_type_str);
-
                 TRY(db->execute("INSERT INTO `objects` (`object_type`, `name`) VALUES(?, ?);", static_cast<int>(type), name));
 
                 auto id = ikarus_id_from_data_and_type(db->last_insert_rowid(), IkarusObjectType_Blueprint);
 
-                LOG_DEBUG("{} is {}", object_type_str, id);
-
                 TRY(insert_function(db, id));
 
                 return cppbase::ok(id);
@@ -65,23 +57,17 @@ template<typename InsertFunction, typename ObjectFactory>
             })
     );
 
-    LOG_VERBOSE("successfully created {}", object_type_str);
-
     return cppbase::ok(object_factory(id));
 }
 
 template<typename Object>
     requires std::derived_from<Object, IkarusObject>
-void delete_object(IkarusProject * project, Object * object) {
+void delete_object(Object * object) {
     auto object_type_str = ikarus_object_type_to_string(ikarus_id_get_object_type(object->id));
 
-    LOG_INFO("deleting {}", object_type_str);
-
-    LOG_DEBUG("project={}; {}={}", object_type_str, object->project->get_path().c_str(), object->id);
-
     auto * ctx = object->project->get_function_context();
 
-    TRYRV(, project->get_db()->execute("DELETE FROM `objects` WHERE `id` = ?", object->id).on_error([&](auto const & err) {
+    TRYRV(, object->project->get_db()->execute("DELETE FROM `objects` WHERE `id` = ?", object->id).on_error([&](auto const & err) {
         ctx->set_error(
             fmt::format("failed to delete {} from objects table: {}", object_type_str, err),
             true,
@@ -90,11 +76,7 @@ void delete_object(IkarusProject * project, Object * object) {
         );
     }));
 
-    LOG_VERBOSE("{} was successfully deleted from database, freeing", object_type_str);
-
-    project->uncache(object);
-
-    LOG_VERBOSE("successfully deleted {}", object_type_str);
+    object->project->uncache(object);
 }
 
 struct SingleQueryData {
@@ -107,10 +89,6 @@ template<typename T, typename Object>
 cppbase::Result<T, sqlitecpp::SingleQueryError> fetch_single_field(Object const * object, SingleQueryData const & query_data) {
     auto object_type_str = ikarus_object_type_to_string(ikarus_id_get_object_type(object->id));
 
-    LOG_VERBOSE("fetching property default value");
-
-    LOG_VERBOSE("project={};property={}", object->project->get_path().c_str(), object->id);
-
     auto * ctx = object->project->get_function_context();
 
     VTRY(
@@ -155,10 +133,6 @@ void fetch_multiple_buffered(
 
     auto object_type_str = ikarus_object_type_to_string(ikarus_id_get_object_type(object->id));
 
-    LOG_VERBOSE("fetching {} {}", object_type_str, query_data.relation_desc);
-
-    LOG_VERBOSE("project={};{}={}", object->project->get_path().c_str(), object_type_str, object->id);
-
     Selected select_buffer[buffer_size];
 
     TRYRV(
@@ -185,8 +159,6 @@ void fetch_multiple_buffered(
             })
     );
 
-    LOG_DEBUG("{} {}: [{}]", object_type_str, query_data.relation_desc, fmt::join(select_buffer, select_buffer + buffer_size, ", "));
-
     for (size_t i = 0; i < buffer_size; ++i) {
         VTRYRV(mapped_buffer[i], , transformer(object->project, ctx, select_buffer[i]));
     }
@@ -204,12 +176,8 @@ template<typename Object>
 cppbase::Result<cppbase::usize, sqlitecpp::QueryError> fetch_count(Object const * object, CountQueryData const & query_data) {
     auto * object_type_str = ikarus_object_type_to_string(ikarus_id_get_object_type(object->id));
 
-    LOG_VERBOSE("fetching {} {} count", object_type_str, query_data.relation_desc);
-
     auto * ctx = object->project->get_function_context();
 
-    LOG_DEBUG("{}={}", object_type_str, object->id);
-
     VTRY(
         auto count,
         object->project->get_db()
@@ -232,11 +200,42 @@ cppbase::Result<cppbase::usize, sqlitecpp::QueryError> fetch_count(Object const
             })
     );
 
-    LOG_DEBUG("{} {} count: {}", object_type_str, query_data.relation_desc, count);
-
-    LOG_VERBOSE("successfully fetched {} {} count", object_type_str, query_data.relation_desc);
-
     return cppbase::ok(static_cast<size_t>(count));
 }
 
+template<typename T>
+struct ExistsQueryData {
+    std::string_view table_name;
+    std::string_view where_field_name;
+    T where_field_value;
+    std::string_view relation_desc;
+};
+
+template<typename Object, typename T>
+    requires std::derived_from<Object, IkarusObject>
+cppbase::Result<bool, sqlitecpp::QueryError> check_exists(Object const * object, ExistsQueryData<T> const & query_data) {
+    auto * object_type_str = ikarus_object_type_to_string(ikarus_id_get_object_type(object->id));
+
+    auto * ctx = object->project->get_function_context();
+
+    VTRY(
+        auto exists,
+        object->project->get_db()
+            ->template query_one<int>(
+                fmt::format("SELECT EXISTS(SELECT 1 FROM `{}` WHERE `{}` = ?);", query_data.table_name, query_data.where_field_name),
+                query_data.where_field_value
+            )
+            .on_error([&](auto const & err) {
+                ctx->set_error(
+                    fmt::format("failed to check whether {} {} exists: {}", object_type_str, query_data.relation_desc, err),
+                    true,
+                    IkarusErrorInfo_Source_SubSystem,
+                    IkarusErrorInfo_Type_SubSystem_Database
+                );
+            })
+    );
+
+    return cppbase::ok(static_cast<bool>(exists));
+}
+
 }  // namespace ikarus::util
diff --git a/vendor/sqlitecpp b/vendor/sqlitecpp
index 2a93b8b..00a1afc 160000
--- a/vendor/sqlitecpp
+++ b/vendor/sqlitecpp
@@ -1 +1 @@
-Subproject commit 2a93b8b1a8be03a9a9c4c72956b1111299de0ddd
+Subproject commit 00a1afcc5f564f562c436f1ddfa4f44bb6489b17