modul 4 modul 5 DBMS
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Catégorie :Category: nCreator TI-Nspire
Auteur Author: SPITZER2001
Type : Classeur 3.0.1
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Mis en ligne Uploaded: 20/11/2024 - 17:29:44
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Visibilité Visibility: Archive publique
Shortlink : https://tipla.net/a4329862
Type : Classeur 3.0.1
Page(s) : 1
Taille Size: 2.10 Ko KB
Mis en ligne Uploaded: 20/11/2024 - 17:29:44
Uploadeur Uploader: SPITZER2001 (Profil)
Téléchargements Downloads: 7
Visibilité Visibility: Archive publique
Shortlink : https://tipla.net/a4329862
Description
Fichier Nspire généré sur TI-Planet.org.
Compatible OS 3.0 et ultérieurs.
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Module 4: Advanced SQL Techniques Triggers Triggers are database objects that execute automatically inresponse to specified events like INSERT, UPDATE, or DELETE. Before Triggers: Execute before the triggering event, oftenused for validation. After Triggers: Execute after the event, commonly used forlogging or cascading actions. Window Functions Window functions perform calculations across a set of rowsrelated to the current row, without collapsing the result set. They are usedfor tasks like rankings, cumulative sums, and moving averages. Common Table Expressions (CTEs) CTEs are temporary result sets that simplify complex queriesand improve readability. They allow for better structuring of SQL statements. Stored Procedures Stored procedures are precompiled SQL statements stored inthe database for reuse. They improve performance, enforce business logic, andsimplify repetitive tasks. Partitioning Partitioning divides large tables into smaller segments foreasier management and improved query performance. MERGE Statement The MERGE statement combines INSERT, UPDATE, and DELETEoperations in a single query, useful for synchronizing data. Module 5: Database Design and Normalization Normalization 1NF: Ensures that columns contain atomic values and thereare no repeating groups. 2NF: Eliminates partial dependencies by ensuring that everynon-key attribute depends on the whole primary key. 3NF: Removes transitive dependencies, ensuring that non-keyattributes depend only on the primary key. Schema Design Principles Effective schema design minimizes redundancy, improves dataintegrity, and ensures scalability for read/write-heavy environments. Made with nCreator - tiplanet.org
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Compatible OS 3.0 et ultérieurs.
<<
Module 4: Advanced SQL Techniques Triggers Triggers are database objects that execute automatically inresponse to specified events like INSERT, UPDATE, or DELETE. Before Triggers: Execute before the triggering event, oftenused for validation. After Triggers: Execute after the event, commonly used forlogging or cascading actions. Window Functions Window functions perform calculations across a set of rowsrelated to the current row, without collapsing the result set. They are usedfor tasks like rankings, cumulative sums, and moving averages. Common Table Expressions (CTEs) CTEs are temporary result sets that simplify complex queriesand improve readability. They allow for better structuring of SQL statements. Stored Procedures Stored procedures are precompiled SQL statements stored inthe database for reuse. They improve performance, enforce business logic, andsimplify repetitive tasks. Partitioning Partitioning divides large tables into smaller segments foreasier management and improved query performance. MERGE Statement The MERGE statement combines INSERT, UPDATE, and DELETEoperations in a single query, useful for synchronizing data. Module 5: Database Design and Normalization Normalization 1NF: Ensures that columns contain atomic values and thereare no repeating groups. 2NF: Eliminates partial dependencies by ensuring that everynon-key attribute depends on the whole primary key. 3NF: Removes transitive dependencies, ensuring that non-keyattributes depend only on the primary key. Schema Design Principles Effective schema design minimizes redundancy, improves dataintegrity, and ensures scalability for read/write-heavy environments. Made with nCreator - tiplanet.org
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