diff --git a/clase28/.gitignore b/clase28/.gitignore
new file mode 100644
index 0000000..751553b
--- /dev/null
+++ b/clase28/.gitignore
@@ -0,0 +1 @@
+*.bak
diff --git "a/clase28/M06C01 - Resuelto - Escenario 2 \342\200\224 Bazar Digital" "b/clase28/M06C01 - Resuelto - Escenario 2 \342\200\224 Bazar Digital"
new file mode 100644
index 0000000..bfce10e
--- /dev/null
+++ "b/clase28/M06C01 - Resuelto - Escenario 2 \342\200\224 Bazar Digital"	
@@ -0,0 +1 @@
+<mxfile host="app.diagrams.net" modified="2021-02-08T21:35:29.773Z" agent="5.0 (Macintosh)" etag="nA2Fv2Dmn2Fk-t30SAO0" version="14.3.0" type="google"><diagram name="Page-1" id="e56a1550-8fbb-45ad-956c-1786394a9013">7V3dcps4GH0aX6YDyNjkMnaSdqfpTCbpdNurHRlkW1uMXCw3cZ9+JVvCgMDGMTKQVduZIiEkWTrfQfp+RA+MF68fY7icfyEBCnuOFbz2wG3Pcey+M2D/8ZzNLsezvF3GLMaBKLTPeMZ/kMi0RO4aB2iVKUgJCSleZjN9EkXIp5k8GMfkJVtsSsJsq0s4Q0rGsw9DNfdvHNC5yLUta3/jE8KzuWjac8WNCfR/zmKyjkR7PQdMt392txdQ1iXKr+YwIC+pLHDXA+OYELq7WryOUcjHVg7b7rn7krtJv2MU0SoPOKh/7Qwt5A/9gTcF0ytRw28YrsVYfGNVQdFbupEjtHrBixBGLDWa00XIMm12OSURfRaFLJb25zgMHuCGrHlvVpSNjkyN5iTGf1h5KB9mt2MqsMAAxGrDYTgmIYm3TQJk8b+ZJ595jaKtGK3Ys4/yp9tJ1gNcUdkfEoZwucKTbQ95kQWMZzgaEUrJQhSSP+0+27yYRzCCIZ5FLM9nDaGYN8PnGwXycTmluwYX2BfXIZygcJQARFYdke0ormhMfiZok4N5Dxc45EL0DcUBjKAc490o2X11vuUEopii11SWmP+PiCwQjTesiLjrXAssbqT0ivRLCvkDkTdPgd4eCCmHQtpmSd17xLELAbqKAHQUAP7mAPwrUCE4h0t+yX49xTB8YkQAoxm/O6JkKQcdTeXkx6Lr/HqSnvAUgOXc7h4b8VHEjBZuRPYCB8G2gTQ05QQuoY+j2cOuwYG1z3oSDfdZ1sscU/TM8nnPXxh7sjzCmpmGW8zMWQMo2mKKQgoniSQtCY7odpzdEfvHpmNsfXB7LhuIMUvb+zT7x4vHdEwiBiqIt8hATAheEBeEURCT5VcGeyQHIy21LkuroCqlieMoE6iSb4RjoAKWBkwBBVOPn0+BU3qA7DJ4lUGqACpVUZaFVF8noo6Bho+K+EEV4OGUwCN5Y4t+ZN56GdikcOIOLgSTgQKTKfLnBe++yxPPtt73xTo6WMatyDKOjjfXUIHP2cipj1N2AOosoQxKkFAbodSBCOvq69cfv9afb6Y338Gnf6h9F/26kiv9FCwWKMDkEc6IYZbOMIvnVGQWTxeO1J2ZoZc30sthQdXHMdqwoW6a0GIZIrYRbce+6R2STHZPoIFxbLviPlwfrNR90/1J+yZDOkdJR/tOSR86+go6KOHaPMM3uvnGUtFVA98Ar2m+cc0SRy/b9EtA0Sq2UaDsKbC4E6ublYoPY5dohV1i390HHKFSmJ5srXCHOWuF26/GWklmrdC8vvjC2z7pRVjdYAG0clnjBguvMtDaYLCwVaXRaRYLY6E4gofrEjy86U0ILoYLVQkUkcUkRh1adHeJaHQQS6M2ClvVFLWIVrq1xC6XTm2kogcTqpqn5wzCrUDg3+xyxi8ZJsIQB0TeYs2k7hr+6Qz/VLZkaMGaqjQy/FMb/4ASLLScf1S1TxBhwyidYRTbqqo51AIf1W3HUEptlOKWgKHllKL64qzWKAy65HHxv2cVUFGzpwdBqtLZsEptrDIsAUPLWUXV9gaIwjBEJkai12JbxPlWh3yMBJA8dNTqMNShBizwKUwD0ZgeWmV6sMt0ze20PRQ4GhrbQ62vv3o9DS9mfChw+GlRaNY7XFWf7GJ4MtE0aosocPcx7oU1skytzj4XW2TLfVaBNWKS2CL4RK3DrY9FYo2YGFtE03v80wmoUWOE8W/WS0BOCRpaTkCqPtmHEcUBNOucDjFLs0YJxwSDaiSWWqNBL0csqkp5GSMfG6NEl2ilqlUCaIGQqoE2tFIbrZSZqOpTy+jABFCVwU8kRCY04v2aI1wva47oD9xqpGQnh6TVikBVYxyT0FghWmWFAGVK53ZaIYCqBjJWiFpfd6CMdtpthQCq0saEQDS7ij6dWhq1OwDjg6yRVbrpgwwKfJDRyo/xku3PI0Mt3aGWRi0KwPgia6SWbvoiAw06G8MnF+OTynYEW8dqt68qdwyh1EYo2oPAtWDCrXBMDgpmSCoI2HjNyYxEMLzb56YnHkXBDT80nyXvnqRqi43kPnMBo03vmDqs4rkgbD7izXcxvdvED574wPUY6BXT5Ba7Tt2JAq7cE/e23Uul1ckW87gi69hHJQMp/fCoJJGiQuKVwAf0IF2k6cEqhILIjFEIKf6NMv0sAoho45FLwF73l9QjdX/5XfbuJ4un9jBTKnJyFYF8RbthUSpiqICbVDEhoaUddvq5Dlv24X7lyjvWdU5cdj3YC08yC2+Upwq22rfLkxCdSwiUXVWggAdE+hHFmI0d14mfIUgy8P2gIDktEyR3kMOZ80ZBymvjQZ71axIk1y7ucGm/cuVtLyN49QuSpy5Wbtj7eAx6N7fcXc+YpN6vSQrkZMCt6n0jTySp98Q41SKV9hk1Zim5oG7cLOWdvCFr1CwltUvGLKVrU+Z10yzlGbNU23Q9p1NLo2Ypz5ilNLJKN81SnqrqMS6jXWOVRi1SnrFIaWSVblqkPFXhZYzdnaSWZoNcPHNGjkZu6cQZOYWfGVCVLytK/J+GWDpELJc8fKv4WxWGW7R+C6QTZxUX9lzVtKDVY0ymaIW5Uc7QTIdopuo5WtrAZJQuemmmo3oX47PXaVrxmlTkyrMCDafo2BZp99nT9qo58BkzE7C7a/69ekcoLkIyvPEiAbuFaCz/ctmTid1t1kniIHu00k+ieIepvgeNr0TtC+xOfMisGB9FX7TfHefHxj/KwGTwa02oEJ6rF9G7G1ZkyL1B5V15AmD6G4zJ+YC7Os0RgRddzNdDZZf0yyiGqqqNNCcF1qyP7K5C8sAH1M4kMnGMiuGw7nPYJb1AilGqqjoNh9XMYZ3QdhZ3vUJQoSGYNhPMRQOVizFkfM0084t2fzN92BgqUDgeU5lV+u3LPJAtVPjI/Yso3QhVHVxT0jsaiZmNJE6CJ6+sD5bj9jIRlEMAZMbta/qB2006lQ+izMV6piKqzw5ZlghIR1oeUgscjbY8O4hSNCQVm14OQHXFPrq52Mehm67uaHnZr7piH4sx7jWC8fKYeZba45YnNnnUWz01ZPgg3I/J09tgLc+iOwprucKqD9fnsdp1kzNunzTjyhkPBUcq6CEtr2B2S78WUDNjnXxaQS5oGlxnTh84Wr7vur0ziIYlY8JVAPvibPkx/0ICxEv8Bw==</diagram></mxfile>
\ No newline at end of file
diff --git a/clase28/analisis.txt b/clase28/analisis.txt
new file mode 100644
index 0000000..f6e4ec2
--- /dev/null
+++ b/clase28/analisis.txt
@@ -0,0 +1,49 @@
+Paso 1: Identificar los campos
+user_firstname
+user_lastname
+user_email
+user_password
+user_category
+course_title
+course_description
+course_image
+course_start_date
+course_end_date
+course_max_students
+unit_title
+unit_description
+unit_start_date
+
+Paso 2: Agrupar todos los campos segun entidad
+_______________________
+categories
+ - id
+ - name
+
+users
+  - id
+  - firstname
+  - lastname
+  - email
+  - password
+  - categories_id (FK)
+
+courses
+ - id
+ - title
+ - description
+ - image
+ - start_date
+ - end_date
+ - max_students
+
+courses_has_users
+ - users_id (FK)
+ - courses_id (FK)
+
+units
+ - id
+ - title
+ - description
+ - start_date
+ - courses_id (FK)
\ No newline at end of file
diff --git a/clase28/courses_db.mwb b/clase28/courses_db.mwb
new file mode 100644
index 0000000..5630fc1
Binary files /dev/null and b/clase28/courses_db.mwb differ
diff --git a/clase28/escenario 2 - Bazar Digital.png b/clase28/escenario 2 - Bazar Digital.png
new file mode 100644
index 0000000..05e8435
Binary files /dev/null and b/clase28/escenario 2 - Bazar Digital.png differ
diff --git a/clase28/escenario_1.png b/clase28/escenario_1.png
new file mode 100644
index 0000000..0817715
Binary files /dev/null and b/clase28/escenario_1.png differ