Views store a database select query and make virtual tables that can be accessed just like your main tables. This makes it easier to retrieve information from the database.
- [Instructor] Sequel select statements … provide a very powerful way … to interact with the data that's stored … in a relational database, … but they can get a little bit long … when you're joining multiple tables together … or have complex filtrating requirements … specified in a where clause. … Luckily relational database management systems … allow you to save a query as something called a view. … This query here at the top of the screen … is the one that we finished the last movie with, … and it pulls the product's name and price … from the products table and matches it … to the supplier name and phone number … from the supplier's table. … These are the results that returned from this query. … Now let's suppose this detailed look … at the product information is something … that you need to access regularly. … Rather than type out the select query every time, … you can save it as a virtual table object in the database. … To do that, place your cursor at the beginning … of line number one, and then press enter …
Author
Released
9/23/2019- The basics of data storage
- Choosing an entity-relationship design tool
- Using primary keys to identify records
- What to consider when naming objects
- Creating a unique constraint
- Establishing table indexes
- Relating tables with foreign keys
- One-to-many and one-to-one relationships
- Normalization
- Writing SELECT queries in SQL
Skill Level Intermediate
Duration
Views
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Database Foundations: Administration
with Adam Wilbert1h 14m Beginner -
Learning Relational Databases
with Adam Wilbert2h 43m Beginner
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Introduction
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1. Get to Know Relational Databases
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What the CRUD?3m 48s
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2. Entity Relationship Diagrams
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Choose an ER design tool5m 7s
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Design a table3m 39s
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3. Data Integrity and Validation
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Data constraints1m 44s
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Create a unique constraint5m 46s
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Define a default value3m 58s
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Establish table indexes4m 49s
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Add check constraints5m 31s
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4. Relationships
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Diagram a relationship2m 42s
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One-to-many relationships2m 10s
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One-to-one relationships1m 10s
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Many-to-many relationships2m 21s
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Self joins2m 17s
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Cascade changes2m 17s
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5. Normalization
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When not to normalize2m 29s
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6. Structured Query Language
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Data definition queries6m 22s
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Data manipulation queries4m 52s
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Create a database view2m 44s
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7. Beyond the Relational Model
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Graph databases1m 38s
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Document databases1m 32s
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Conclusion
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Next steps59s
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Video: Create a database view