diff --git a/src/templates_front/templator_front.org b/src/templates_front/templator_front.org
index ab2066f..f6fd7bf 100644
--- a/src/templates_front/templator_front.org
+++ b/src/templates_front/templator_front.org
@@ -705,6 +705,7 @@ trexio_exit_code transform_str (char** dest, const char** src, uint64_t str_max_
     #+end_src c
 
 * Templates for front end
+** Description
 
   Consider the following block of ~trex.json~:
 
@@ -1051,7 +1052,7 @@ interface
 end interface
      #+end_src
 
-** Templates for front end has/read/write a dataset
+** Templates for front end has/read/write a dataset of numerical data
 
    This section concerns API calls related to datasets.
 
@@ -1074,7 +1075,7 @@ end interface
    The basic (non-suffixed) API call on datasets deals with double precision (see Table above).
 
 
-     #+begin_src c :tangle hrw_dset_front.h :exports none
+     #+begin_src c :tangle hrw_dset_data_front.h :exports none
 trexio_exit_code trexio_has_$group_dset$(trexio_t* const file);
 trexio_exit_code trexio_read_$group_dset$(trexio_t* const file, $group_dset_dtype_default$* const $group_dset$);
 trexio_exit_code trexio_write_$group_dset$(trexio_t* const file, const $group_dset_dtype_default$* $group_dset$);
@@ -1084,7 +1085,7 @@ trexio_exit_code trexio_read_$group_dset$_64(trexio_t* const file, $group_dset_d
 trexio_exit_code trexio_write_$group_dset$_64(trexio_t* const file, const $group_dset_dtype_double$* $group_dset$);
      #+end_src
 
-     #+begin_src c :tangle read_dset_64_front.c
+     #+begin_src c :tangle read_dset_data_64_front.c
 trexio_exit_code
 trexio_read_$group_dset$_64 (trexio_t* const file, $group_dset_dtype_double$* const $group_dset$)
 {
@@ -1124,7 +1125,7 @@ trexio_read_$group_dset$_64 (trexio_t* const file, $group_dset_dtype_double$* co
 }
      #+end_src
 
-     #+begin_src c :tangle write_dset_64_front.c
+     #+begin_src c :tangle write_dset_data_64_front.c
 trexio_exit_code
 trexio_write_$group_dset$_64 (trexio_t* const file, const $group_dset_dtype_double$* $group_dset$)
 {
@@ -1164,7 +1165,7 @@ trexio_write_$group_dset$_64 (trexio_t* const file, const $group_dset_dtype_doub
 }
      #+end_src
 
-     #+begin_src c :tangle read_dset_32_front.c
+     #+begin_src c :tangle read_dset_data_32_front.c
 trexio_exit_code
 trexio_read_$group_dset$_32 (trexio_t* const file, $group_dset_dtype_single$* const $group_dset$)
 {
@@ -1225,7 +1226,7 @@ trexio_read_$group_dset$_32 (trexio_t* const file, $group_dset_dtype_single$* co
 }
      #+end_src
 
-     #+begin_src c :tangle write_dset_32_front.c
+     #+begin_src c :tangle write_dset_data_32_front.c
 trexio_exit_code
 trexio_write_$group_dset$_32 (trexio_t* const file, const $group_dset_dtype_single$* $group_dset$)
 {
@@ -1284,7 +1285,7 @@ trexio_write_$group_dset$_32 (trexio_t* const file, const $group_dset_dtype_sing
 }
      #+end_src
 
-     #+begin_src c :tangle read_dset_def_front.c
+     #+begin_src c :tangle read_dset_data_def_front.c
 trexio_exit_code
 trexio_read_$group_dset$ (trexio_t* const file, $group_dset_dtype_default$* const $group_dset$)
 {
@@ -1292,7 +1293,7 @@ trexio_read_$group_dset$ (trexio_t* const file, $group_dset_dtype_default$* cons
 }
      #+end_src
 
-     #+begin_src c :tangle write_dset_def_front.c
+     #+begin_src c :tangle write_dset_data_def_front.c
 trexio_exit_code
 trexio_write_$group_dset$ (trexio_t* const file, const $group_dset_dtype_default$* $group_dset$)
 {
@@ -1300,7 +1301,7 @@ trexio_write_$group_dset$ (trexio_t* const file, const $group_dset_dtype_default
 }
      #+end_src
 
-     #+begin_src c :tangle has_dset_front.c
+     #+begin_src c :tangle has_dset_data_front.c
 trexio_exit_code
 trexio_has_$group_dset$ (trexio_t* const file)
 {
@@ -1333,7 +1334,7 @@ trexio_has_$group_dset$ (trexio_t* const file)
     The ~Fortran~ templates that provide an access to the ~C~ API calls from ~Fortran~.
     These templates are based on the use of ~iso_c_binding~. Pointers have to be passed by value.
 
-     #+begin_src f90 :tangle write_dset_64_front_fortran.f90
+     #+begin_src f90 :tangle write_dset_data_64_front_fortran.f90
 interface
    integer function trexio_write_$group_dset$_64 (trex_file, dset) bind(C)
      use, intrinsic :: iso_c_binding
@@ -1343,7 +1344,7 @@ interface
 end interface
      #+end_src
 
-     #+begin_src f90 :tangle read_dset_64_front_fortran.f90
+     #+begin_src f90 :tangle read_dset_data_64_front_fortran.f90
 interface
    integer function trexio_read_$group_dset$_64 (trex_file, dset) bind(C)
      use, intrinsic :: iso_c_binding
@@ -1353,7 +1354,7 @@ interface
 end interface
      #+end_src
 
-     #+begin_src f90 :tangle write_dset_32_front_fortran.f90
+     #+begin_src f90 :tangle write_dset_data_32_front_fortran.f90
 interface
    integer function trexio_write_$group_dset$_32 (trex_file, dset) bind(C)
      use, intrinsic :: iso_c_binding
@@ -1363,7 +1364,7 @@ interface
 end interface
      #+end_src
 
-     #+begin_src f90 :tangle read_dset_32_front_fortran.f90
+     #+begin_src f90 :tangle read_dset_data_32_front_fortran.f90
 interface
    integer function trexio_read_$group_dset$_32 (trex_file, dset) bind(C)
      use, intrinsic :: iso_c_binding
@@ -1373,7 +1374,7 @@ interface
 end interface
      #+end_src
 
-     #+begin_src f90 :tangle write_dset_def_front_fortran.f90
+     #+begin_src f90 :tangle write_dset_data_def_front_fortran.f90
 interface
    integer function trexio_write_$group_dset$ (trex_file, dset) bind(C)
      use, intrinsic :: iso_c_binding
@@ -1383,7 +1384,7 @@ interface
 end interface
      #+end_src
 
-     #+begin_src f90 :tangle read_dset_def_front_fortran.f90
+     #+begin_src f90 :tangle read_dset_data_def_front_fortran.f90
 interface
    integer function trexio_read_$group_dset$ (trex_file, dset) bind(C)
      use, intrinsic :: iso_c_binding
@@ -1393,7 +1394,7 @@ interface
 end interface
      #+end_src
 
-     #+begin_src f90 :tangle has_dset_front_fortran.f90
+     #+begin_src f90 :tangle has_dset_data_front_fortran.f90
 interface
    integer function trexio_has_$group_dset$ (trex_file) bind(C)
      use, intrinsic :: iso_c_binding
diff --git a/src/templates_hdf5/build.sh b/src/templates_hdf5/build.sh
index 8e01f5a..137c7a5 100644
--- a/src/templates_hdf5/build.sh
+++ b/src/templates_hdf5/build.sh
@@ -7,14 +7,10 @@ cat populated/pop_def_hdf5.c >> trexio_hdf5.c
 cat populated/pop_struct_hdf5.h >> trexio_hdf5.h
 
 cat populated/pop_basic_hdf5.c >> trexio_hdf5.c
-cat populated/pop_has_dset_hdf5.c >> trexio_hdf5.c
-cat populated/pop_has_num_hdf5.c >> trexio_hdf5.c
-cat populated/pop_read_dset_hdf5.c >> trexio_hdf5.c
-cat populated/pop_read_num_hdf5.c >> trexio_hdf5.c
-cat populated/pop_write_dset_hdf5.c >> trexio_hdf5.c
-cat populated/pop_write_num_hdf5.c >> trexio_hdf5.c
-cat populated/pop_hrw_num_hdf5.h >> trexio_hdf5.h
-cat populated/pop_hrw_dset_hdf5.h >> trexio_hdf5.h
+cat populated/pop_has_*.c >> trexio_hdf5.c
+cat populated/pop_read_*.c >> trexio_hdf5.c
+cat populated/pop_write_*.c >> trexio_hdf5.c
+cat populated/pop_hrw_*.h >> trexio_hdf5.h
 
 cat suffix_hdf5.h   >> trexio_hdf5.h
 
diff --git a/src/templates_hdf5/templator_hdf5.org b/src/templates_hdf5/templator_hdf5.org
index c0e2c05..f5b7a7a 100644
--- a/src/templates_hdf5/templator_hdf5.org
+++ b/src/templates_hdf5/templator_hdf5.org
@@ -279,15 +279,15 @@ trexio_hdf5_has_$group_num$ (trexio_t* const file)
 }
     #+end_src
 
-** Template for HDF5 has/read/write a dataset
+** Template for HDF5 has/read/write a dataset of numerical data
 
-   #+begin_src c :tangle hrw_dset_hdf5.h :exports none
+   #+begin_src c :tangle hrw_dset_data_hdf5.h :exports none
 trexio_exit_code trexio_hdf5_has_$group_dset$(trexio_t* const file);
 trexio_exit_code trexio_hdf5_read_$group_dset$(trexio_t* const file, $group_dset_dtype$* const $group_dset$, const uint32_t rank, const uint64_t* dims);
 trexio_exit_code trexio_hdf5_write_$group_dset$(trexio_t* const file, const $group_dset_dtype$* $group_dset$, const uint32_t rank, const uint64_t* dims);
    #+end_src
 
-   #+begin_src c :tangle read_dset_hdf5.c
+   #+begin_src c :tangle read_dset_data_hdf5.c
 trexio_exit_code
 trexio_hdf5_read_$group_dset$ (trexio_t* const file, $group_dset_dtype$* const $group_dset$,
 				       const uint32_t rank, const uint64_t* dims)
@@ -343,7 +343,7 @@ trexio_hdf5_read_$group_dset$ (trexio_t* const file, $group_dset_dtype$* const $
 }
    #+end_src
 
-   #+begin_src c :tangle write_dset_hdf5.c
+   #+begin_src c :tangle write_dset_data_hdf5.c
 trexio_exit_code
 trexio_hdf5_write_$group_dset$ (trexio_t* const file, const $group_dset_dtype$* $group_dset$,
 					const uint32_t rank, const uint64_t* dims)
@@ -389,7 +389,59 @@ trexio_hdf5_write_$group_dset$ (trexio_t* const file, const $group_dset_dtype$*
 }
    #+end_src
 
-   #+begin_src c :tangle has_dset_hdf5.c
+   #+begin_src c :tangle has_dset_data_hdf5.c
+trexio_exit_code
+trexio_hdf5_has_$group_dset$ (trexio_t* const file)
+{
+
+  if (file == NULL) return TREXIO_INVALID_ARG_1;
+
+  trexio_hdf5_t* f = (trexio_hdf5_t*) file;
+
+  herr_t status = H5LTfind_dataset(f->$group$_group, $GROUP_DSET$_NAME);
+  /* H5LTfind_dataset returns 1 if dataset exists, 0 otherwise */
+  if (status == 1){
+    return TREXIO_SUCCESS;
+  } else if (status == 0) {
+    return TREXIO_HAS_NOT;
+  } else {
+    return TREXIO_FAILURE;
+  }
+
+}
+   #+end_src
+
+** Template for HDF5 has/read/write a dataset of strings
+
+   #+begin_src c :tangle hrw_dset_str_hdf5.h :exports none
+trexio_exit_code trexio_hdf5_has_$group_dset$(trexio_t* const file);
+trexio_exit_code trexio_hdf5_read_$group_dset$(trexio_t* const file, $group_dset_dtype$* const $group_dset$, const uint32_t rank, const uint64_t* dims);
+trexio_exit_code trexio_hdf5_write_$group_dset$(trexio_t* const file, const $group_dset_dtype$* $group_dset$, const uint32_t rank, const uint64_t* dims);
+   #+end_src
+
+   #+begin_src c :tangle read_dset_str_hdf5.c
+trexio_exit_code
+trexio_hdf5_read_$group_dset$ (trexio_t* const file, $group_dset_dtype$* const $group_dset$,
+				       const uint32_t rank, const uint64_t* dims)
+{
+
+  return TREXIO_SUCCESS;
+
+}
+   #+end_src
+
+   #+begin_src c :tangle write_dset_str_hdf5.c
+trexio_exit_code
+trexio_hdf5_write_$group_dset$ (trexio_t* const file, const $group_dset_dtype$* $group_dset$,
+					const uint32_t rank, const uint64_t* dims)
+{
+
+  return TREXIO_SUCCESS;
+
+}
+   #+end_src
+
+   #+begin_src c :tangle has_dset_str_hdf5.c
 trexio_exit_code
 trexio_hdf5_has_$group_dset$ (trexio_t* const file)
 {
diff --git a/src/templates_text/build.sh b/src/templates_text/build.sh
index af759d9..da0520c 100644
--- a/src/templates_text/build.sh
+++ b/src/templates_text/build.sh
@@ -17,14 +17,18 @@ cat populated/pop_free_group_text.h >> trexio_text.h
 cat populated/pop_read_group_text.h >> trexio_text.h
 cat populated/pop_flush_group_text.h >> trexio_text.h
 
-cat populated/pop_has_dset_text.c >> trexio_text.c
+cat populated/pop_has_dset_data_text.c >> trexio_text.c
+#cat populated/pop_has_dset_str_text.c >> trexio_text.c
 cat populated/pop_has_num_text.c >> trexio_text.c
-cat populated/pop_read_dset_text.c >> trexio_text.c
+cat populated/pop_read_dset_data_text.c >> trexio_text.c
+#cat populated/pop_read_dset_str_text.c >> trexio_text.c
 cat populated/pop_read_num_text.c >> trexio_text.c
-cat populated/pop_write_dset_text.c >> trexio_text.c
+cat populated/pop_write_dset_data_text.c >> trexio_text.c
+#cat populated/pop_write_dset_str_text.c >> trexio_text.c
 cat populated/pop_write_num_text.c >> trexio_text.c
 cat populated/pop_hrw_num_text.h >> trexio_text.h
-cat populated/pop_hrw_dset_text.h >> trexio_text.h
+cat populated/pop_hrw_dset_data_text.h >> trexio_text.h
+#cat populated/pop_hrw_dset_str_text.h >> trexio_text.h
 
 cat rdm_text.c >> trexio_text.c
 cat rdm_text.h >> trexio_text.h
diff --git a/src/templates_text/templator_text.org b/src/templates_text/templator_text.org
index 7d3dd2c..5b5e2c5 100644
--- a/src/templates_text/templator_text.org
+++ b/src/templates_text/templator_text.org
@@ -505,7 +505,7 @@ trexio_text_free_$group$ (trexio_text_t* const file)
 }
     #+end_src
 
-** Template for has/read/write the ~$group_num$~ attribute
+** Template for has/read/write the num attribute
 
     #+begin_src c :tangle hrw_num_text.h :exports none
 trexio_exit_code trexio_text_has_$group_num$ (trexio_t* const file);
@@ -568,17 +568,17 @@ trexio_text_has_$group_num$ (trexio_t* const file)
 }
    #+end_src
 
-** Template for has/read/write the ~$group_dset$~ dataset
+** Template for has/read/write the dataset of numerical data
 
      The ~group_dset~ array is assumed allocated with the appropriate size.
 
-   #+begin_src c :tangle hrw_dset_text.h :exports none
+   #+begin_src c :tangle hrw_dset_data_text.h :exports none
 trexio_exit_code trexio_text_has_$group_dset$ (trexio_t* const file);
 trexio_exit_code trexio_text_read_$group_dset$ (trexio_t* const file, $group_dset_dtype$* const $group_dset$, const uint32_t rank, const uint64_t* dims);
 trexio_exit_code trexio_text_write_$group_dset$(trexio_t* const file, const $group_dset_dtype$* $group_dset$, const uint32_t rank, const uint64_t* dims);
    #+end_src
 
-   #+begin_src c :tangle read_dset_text.c
+   #+begin_src c :tangle read_dset_data_text.c
 trexio_exit_code
 trexio_text_read_$group_dset$ (trexio_t* const file, $group_dset_dtype$* const $group_dset$,
 			       const uint32_t rank, const uint64_t* dims)
@@ -607,7 +607,7 @@ trexio_text_read_$group_dset$ (trexio_t* const file, $group_dset_dtype$* const $
 }
    #+end_src
 
-   #+begin_src c :tangle write_dset_text.c
+   #+begin_src c :tangle write_dset_data_text.c
 trexio_exit_code
 trexio_text_write_$group_dset$ (trexio_t* const file, const $group_dset_dtype$* $group_dset$,
 				const uint32_t rank, const uint64_t* dims)
@@ -645,7 +645,7 @@ trexio_text_write_$group_dset$ (trexio_t* const file, const $group_dset_dtype$*
 }
    #+end_src
 
-   #+begin_src c :tangle has_dset_text.c
+   #+begin_src c :tangle has_dset_data_text.c
 trexio_exit_code
 trexio_text_has_$group_dset$ (trexio_t* const file)
 {
@@ -663,7 +663,47 @@ trexio_text_has_$group_dset$ (trexio_t* const file)
 
 }
    #+end_src
+** Template for has/read/write the dataset of strings
 
+     The ~group_dset~ array is assumed allocated with the appropriate size.
+
+   #+begin_src c :tangle hrw_dset_str_text.h :exports none
+trexio_exit_code trexio_text_has_$group_dset$ (trexio_t* const file);
+trexio_exit_code trexio_text_read_$group_dset$ (trexio_t* const file, $group_dset_dtype$* const $group_dset$, const uint32_t rank, const uint64_t* dims);
+trexio_exit_code trexio_text_write_$group_dset$(trexio_t* const file, const $group_dset_dtype$* $group_dset$, const uint32_t rank, const uint64_t* dims);
+   #+end_src
+
+   #+begin_src c :tangle read_dset_str_text.c
+trexio_exit_code
+trexio_text_read_$group_dset$ (trexio_t* const file, $group_dset_dtype$* const $group_dset$,
+			       const uint32_t rank, const uint64_t* dims)
+{
+
+  return TREXIO_SUCCESS;
+
+}
+   #+end_src
+
+   #+begin_src c :tangle write_dset_str_text.c
+trexio_exit_code
+trexio_text_write_$group_dset$ (trexio_t* const file, const $group_dset_dtype$* $group_dset$,
+				const uint32_t rank, const uint64_t* dims)
+{
+
+  return TREXIO_SUCCESS;
+
+}
+   #+end_src
+
+   #+begin_src c :tangle has_dset_str_text.c
+trexio_exit_code
+trexio_text_has_$group_dset$ (trexio_t* const file)
+{
+
+  return TREXIO_SUCCESS;
+
+}
+   #+end_src
 ** RDM struct (hard-coded)
 *** Read the complete struct