diff --git a/include/bitcoin/database/tables/caches/prevout.hpp b/include/bitcoin/database/tables/caches/prevout.hpp
index 1b5abb979..2db937a0e 100644
--- a/include/bitcoin/database/tables/caches/prevout.hpp
+++ b/include/bitcoin/database/tables/caches/prevout.hpp
@@ -28,7 +28,7 @@ namespace libbitcoin {
 namespace database {
 namespace table {
 
-/// prevout is an array map index of previous outputs indexed by block link.
+/// prevout is a slab arraymap index of previous outputs indexed by block link.
 /// The coinbase flag is merged into the tx field, reducing it's domain.
 /// Masking is from the right in order to accomodate integral tx domain.
 struct prevout
diff --git a/include/bitcoin/database/tables/caches/validated_bk.hpp b/include/bitcoin/database/tables/caches/validated_bk.hpp
index 786ba732c..4e173fd46 100644
--- a/include/bitcoin/database/tables/caches/validated_bk.hpp
+++ b/include/bitcoin/database/tables/caches/validated_bk.hpp
@@ -27,7 +27,7 @@ namespace libbitcoin {
 namespace database {
 namespace table {
 
-/// validated_bk is a slab arraymap of block state, indexed by header.fk.
+/// validated_bk is a record arraymap of block state, indexed by header.fk.
 struct validated_bk
   : public array_map<schema::validated_bk>
 {
diff --git a/include/bitcoin/database/tables/optionals/filter_bk.hpp b/include/bitcoin/database/tables/optionals/filter_bk.hpp
index 27d4f0812..e6d1439fb 100644
--- a/include/bitcoin/database/tables/optionals/filter_bk.hpp
+++ b/include/bitcoin/database/tables/optionals/filter_bk.hpp
@@ -27,7 +27,7 @@ namespace libbitcoin {
 namespace database {
 namespace table {
 
-/// filter_bk is a slab arraymap of filter headers indexed by block link.
+/// filter_bk is a record arraymap of filter headers indexed by block link.
 struct filter_bk
   : public array_map<schema::filter_bk>
 {
diff --git a/test/test.hpp b/test/test.hpp
index 3cf36c68e..a19912081 100644
--- a/test/test.hpp
+++ b/test/test.hpp
@@ -63,18 +63,6 @@ std::ostream& operator<<(std::ostream& stream,
     return stream;
 }
 
-// std_vector<Type> -> join(<<Type)
-template <typename Type>
-std::ostream& operator<<(std::ostream& stream,
-    const std_vector<Type>& values) NOEXCEPT
-{
-    // Ok when testing serialize because only used for error message out.
-    BC_PUSH_WARNING(NO_THROW_IN_NOEXCEPT)
-    stream << system::serialize(values);
-    BC_POP_WARNING()
-    return stream;
-}
-
 // std_array<Type, Size> -> join(<<Type)
 template <typename Type, size_t Size>
 std::ostream& operator<<(std::ostream& stream,