Differenze

Queste sono le differenze tra la revisione selezionata e la versione attuale della pagina.

--- mds:dsd:start [07/11/2024 alle 16:40 (5 mesi fa)] – Salvatore Ruggieri
+++ mds:dsd:start [17/03/2025 alle 19:56 (14 giorni fa)] (versione attuale) – [Exams] Salvatore Ruggieri
@@ Linea 11: / Linea 11: @@
     * [[http://pages.di.unipi.it/ruggieri/]]
     * [[[email protected]]]
-    * **Office hours:** Tuesdays h 14:00 - 16:00 or by appointment, at the Department of Computer Science, room 321/DO, or via Teams.
+    * **Office hours:** Tuesdays h 16:00 - 18:00 or by appointment, at the Department of Computer Science, room 321/DO, or via Teams.
@@ Linea 54: / Linea 54: @@
 ^  Date  ^  Hour  ^  Room  ^  Notes  ^
-|  6/11/2024  |  9:00 - 11:00  |  Riunioni Ovest, Dept. Computer Science  | [[https://didattica.di.unipi.it/en/appelli-straordinari/|Extra-ordinary exam]] |
+|  18/3/2025  |  9:00 - 11:00  |  FIB-E  | [[https://didattica.di.unipi.it/en/appelli-straordinari/|Extra-ordinary exam]] |
 =====Class calendar =====
@@ Linea 88: / Linea 88: @@
 |20| 15/11 11-13 | Fib-C1 | The problem of materialized views selection. The lattice of views and the greedy algorithm HRU for the selection of materialized views. Examples. Other algorithms for the choice of the views to materialize with a workload and dimensional hierarchies.  {{:mds:dsd:dsd20.assignments.pdf|Exercises at home for the lesson 21}}. [[http://131.114.72.230/dsd/video/dsd20_20211119.mp4|rec20 (.mp4)]] | **[DW: 7.1-7.7]**  {{:mds:dsd:dsd20.pdf|slides20 (.pdf)}} |
 |21| 22/11 11-13 | Fib-C1 | Recalls of functional dependency properties and how they are used to reason about the properties of the result of a query. Properties of the group-by operator.   [[http://131.114.72.230/dsd/video/dsd21_20221130.mp4|rec21 (.mp4)]] | **[DW: 8.1-8.2, DB: 3.5.1-3.5.4]**  {{:mds:dsd:dsd21.pdf|slides21 (.pdf)}} |
-|22| 29/11 11-13 | Fib-C1 | The problem of evaluating the group-by before the join operator. First case: Invariant grouping. Examples. Other cases: double grouping, grouping and counting. Examples with star queries.  [[http://131.114.72.230/dsd/video/dsd22_20221201.mp4|rec22 (.mp4)]] | **[DW: 8.3-8.6]**  {{:mds:dsd:dsd22.pdf|slides22 (.pdf)}} |
+| | 29/11 11-13 |   | **Lesson canceled due to a strike.**  |   |
-|23| 6/12 11-13 | Fib-C1 | The problem of query rewrite to use a materialized view. Hypothesis and two approaches: With a compensation on the logical view plan, and with a transformation of logical query plan. Examples. [[http://131.114.72.230/dsd/video/dsd23_20211130.mp4|rec23 (.mp4)]] | **[DW: 9.1-9.4]**  {{:mds:dsd:dsd23.pdf|slides23 (.pdf)}} |
+|22| 6/12 11-13 | Fib-C1 | The problem of evaluating the group-by before the join operator. First case: Invariant grouping. Examples. Other cases: double grouping, grouping and counting. Examples with star queries.  [[http://131.114.72.230/dsd/video/dsd22_20221201.mp4|rec22 (.mp4)]] | **[DW: 8.3-8.6]**  {{:mds:dsd:dsd22.pdf|slides22 (.pdf)}} |
-|24| TBD | TBD | Data Warehousing trends: column-oriented DW, main-memory DW, Big Data framework. [[http://131.114.72.230/dsd/video/dsd24_20211203.mp4|rec24 (.mp4)]] | **[DW: 6.5-6.8]**  {{:mds:dsd:dsd24.pdf|slides24 (.pdf)}} |
+|23| 10/12 9-11  | Fib-C  | The problem of query rewrite to use a materialized view. Hypothesis and two approaches: With a compensation on the logical view plan, and with a transformation of logical query plan. Examples. [[http://131.114.72.230/dsd/video/dsd23_20241210.mp4|rec23 (.mp4)]] | **[DW: 9.1-9.4]**  {{:mds:dsd:dsd23.pdf|slides23 (.pdf)}} |
+| | 13/11 11-13 |   | **No lesson on this date.**  |   |
+|24| 17/12 9-11  | Fib-C1 | Data Warehousing trends: column-oriented DW, main-memory DW, Big Data framework. [[http://131.114.72.230/dsd/video/dsd24_20211203.mp4|rec24 (.mp4)]] | **[DW: 6.5-6.8]**  {{:mds:dsd:dsd24.pdf|slides24 (.pdf)}} |