diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5ca0973
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.DS_Store
+
diff --git a/data/mock/bgdc2021.csv b/data/mock/bgdc2021.csv
new file mode 100644
index 0000000..db55c82
--- /dev/null
+++ b/data/mock/bgdc2021.csv
@@ -0,0 +1,7 @@
+individual,generic
+generic,blood
+sample_type,blood
+seq,RNASeq
+sample,sample00
+gene,ABCB1
+variant,rs12345
\ No newline at end of file
diff --git a/data/mock/bgdc2021_mask.csv b/data/mock/bgdc2021_mask.csv
new file mode 100644
index 0000000..0bc7b62
--- /dev/null
+++ b/data/mock/bgdc2021_mask.csv
@@ -0,0 +1,7 @@
+alias,example1,field,table,field_idx,set_value
+individual,meep,person_source_value,person,NA,NA
+sample_type,blood,anatomic_site_source_value,specimen,NA,NA
+seq,RNASeq,sequencing_source_value,sequencing,NA,NA
+sample,GSM,specimen_source_value,specimen,NA,NA
+gene,ARID1A,gene_source_value,gene,1,NA
+variant,rs,variant_source_value,variation,1,NA
\ No newline at end of file
diff --git a/src/R/mock_romopomics_example.R b/src/R/mock_romopomics_example.R
new file mode 100644
index 0000000..c8d9cd0
--- /dev/null
+++ b/src/R/mock_romopomics_example.R
@@ -0,0 +1,24 @@
+pacman::p_load(tidyverse)
+
+#install.packages("devtools")
+devtools::install_github("ngiangre/ROMOPOmics",force=T)
+
+library(ROMOPOmics)
+
+dm_file <- 
+    system.file("extdata","OMOP_CDM_v6_0_custom.csv",package="ROMOPOmics",mustWork = TRUE)
+dm <- 
+    loadDataModel(master_table_file = dm_file)
+
+omop_inputs <- 
+    list(
+        bgdc2021=
+            readInputFile(
+                input_file = "data/mock/bgdc2021.csv",
+                data_model = dm,
+                mask_table = loadModelMasks("data/mock/bgdc2021_mask.csv")
+                )
+        )
+db_inputs   <- combineInputTables(input_table_list = omop_inputs)
+omop_db     <- buildSQLDBR(omop_tables = db_inputs,file.path(tempdir(),"mock.sqlite"))
+DBI::dbListTables(omop_db)