ppti.info Education Entity Framework Code First Ebook

ENTITY FRAMEWORK CODE FIRST EBOOK

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Follow author Ricardo Peres as he introduces the newest development mode for Entity Framework, Code First. With Entity Framework Code. Download Entity Framework's E-book free by ppti.info Getting started with Entity Framework; Code First Conventions; Optimization. Programming Entity Framework: Code First. Julia Lerman and Rowan Miller. Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo.


Entity Framework Code First Ebook

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Editorial Reviews. Review. "It's a great cover-to-cover read, and I can easily see topics I'll ppti.info: Programming Entity Framework: Code First: Creating and Configuring Data Models from Your Classes eBook: Julia Lerman, Rowan. After reading this book, you will be able to know how to create ppti.info MVC 5 application using the entity framework Code first workflow. Summary: The Contoso University sample web application demonstrates how to create. ppti.info MVC 5 applications using the Entity Framework 6, Code First.

Other people are also teaching, speaking and writing about the C4 model too. It's definitely being used though, in organisations ranging from startups to global household names. Why "container"? Terms like "process", "application", "app", "server", "deployable unit", etc all have associated implications, so the name "container" was chosen as a generic way to describe something in which components live.

From one perspective, it's unfortunate that containerisation has become popular, because many software developers now associate the term "container" with Docker. From another perspective though, there is sometimes a nice parity between a container in the C4 model and an infrastructure e. Docker container. While many teams successfully use the C4 model as is, feel free to change the terminology if needed. Can we change the terminology? This terminology context, containers, components and code works for many organisations and many types of software.

However, sometimes an organisation will have an existing terminology that people are already familiar with. Or perhaps "components" and "classes" don't easily map on to the technology being used e.

Feel free to modify the terminology that you use to describe software architecture at different levels of abstraction. Just make sure that everybody explicitly understands it. How do you model microservices and serverless? Broadly speaking, there are two options for diagramming microservices when using the C4 model. Microservices as software systems: If your software system has a dependency upon a number of microservices that are outside of your control e.

Microservices as containers: On the other hand, if the microservices are a part of a software system that you are building i. In the same way that a modular monolithic application is a container with a number of components running inside it, a microservice is simply a container with a smaller number of components running inside it.

How do you diagram large and complex software systems? Even with a relatively small software system, it's tempting to try and include the entire story on a single diagram.

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For example, if you have a web application, it seems logical to create a single component diagram that shows all of the components that make up that web application. Unless your software system really is that small, you're likely to run out of room on the diagram canvas or find it difficult to discover a layout that isn't cluttered by a myriad of overlapping lines. Using a larger diagram canvas can sometimes help, but large diagrams are usually hard to interpret and comprehend because the cognitive load is too high.

And if nobody understands the diagram, nobody is going to look at it. Instead, don't be afraid to split that single complex diagram into a larger number of simpler diagrams, each with a specific focus around a business area, functional area, functional grouping, bounded context, use case, user interaction, feature set, etc.

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The key is to ensure that each of the separate diagrams tells a different part of the same overall story, at the same level of abstraction. See also Diagramming vs modelling for an alternative approach. Will the diagrams become outdated quickly? Due to the hierarchical nature of the C4 model, each diagram will change at a different rate.

System Context diagram: In most cases, the system context diagram will change very slowly, as this describes the landscape that the software system is operating within. Component diagram: For any software system under active development, the component diagrams may change frequently as the team adds, removes or restructures the code into cohesive components. Automating the generation of this level of detail with tooling can help.

Code diagram: The level 4 code e. For this reason, the recommendation is to 1 not create them at all or 2 generate them on-demand using tooling such as your IDE. Why doesn't the C4 model cover business processes, workflows, state machines, domain models, data models, etc?

The focus of the C4 model is the static structures that make up a software system, at different levels of abstraction. Often this is because teams don't know these notations well enough, perceive them to be too complicated, think they are not compatible with agile approaches or don't have the required tooling.

If you are already successfully using one of these notations to communicate software architecture and it's working, stick with it. If not, try the C4 model. And don't be afraid to supplement the C4 diagrams with UML state diagrams, timing diagrams, etc if you need to. Can we combine C4 and arc42? Yes, many teams do, and the C4 model is compatible with the arc42 documentation template as follows. A common misconception is that a team's design process should follow the levels in the C4 model hierarchy, perhaps with different people on the team being responsible for different levels of diagrams.

For example, a business analyst creates the system context diagram, the architect creates the container diagram, while the developers look after the remaining levels of detail. Although you can certainly use the C4 model in this way, this is not the intended or recommended usage pattern. The C4 model is just a way to describe a software system, from different levels of abstraction, and it implies nothing about the process of delivering software.

Using C4 to describe libraries, frameworks and SDKs? The C4 model is really designed to model a software system, at various levels of abstraction. Alternatively, you could use the C4 model to describe a usage example of your framework, library or SDK; perhaps using colour coding to signify which parts of the software system are bespoke vs those provided for you.

Web applications; one container or two? If you're building a server-side web application e.

If there's a significant quantity of JavaScript being delivered by the server-side web application e. Filtering books by publication year and customer ratings 2.

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Paging the books in the list 2. Putting it all together: combining query objects 3. Changing the database content 3. Creating new rows in a table 3. Creating a single entity on its own 3. Creating a book with a review 3.

Updating database rows 3. Handling disconnected updates in a web application 3. Handling relationships in updates 3. Principal and dependent relationships 3. Deleting entities 3. Deleting a principal entity that has relationships 4. Using EF Core in business logic 4. Why is business logic so different from other code?

The business rules that you need to implement 4. Using a design pattern to help implement business logic 4. Five guidelines for building business logic that uses EF Core 4. Implementing the business logic for processing an order 4. Guideline 1: Business logic has first call on defining the database tructure 4. Guideline 2: Business logic should have no distractions 4.

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Guideline 4: Isolate the database access code into a separate project 4. Any disadvantages of this business logic pattern? Placing an order on the book app 4. Adding extra features to your business logic handling 4. Validating the data that you write to the database 4.

Using transactions to daisy-chain a sequence of business logic code 5. NET Core web applications 5. Introducing ASP. NET Core 5. Understanding the architecture of the book app 5. Understanding dependency injection 5. A basic example of dependency injection in ASP. The lifetime of a service created by DI 5. Calling your database access code from ASP. A summary of how ASP. NET Core works and the terms it uses 5. Where does the EF Core code live in the book app? Implementing the book list query page 5.

Implementing your database methods as a DI service 5. Registering your class as a DI service 5.

What is Code-First?

NET action method 5. Improving registering your database access classes as services 5. Deploying an ASP. NET Core application with a database 5. Knowing where the database is on the web server 5.

Creating and migrating the database 5. Updating your production database 5. Having your application migrate your database on startup 5. Running parallel tasks: how to provide the DbContext 5. Configuring nonrelational properties 6. Three ways of configuring EF Core 6. A worked example of configuring EF Core 6. Configuring By Convention 6. Conventions for entity classes 6. Conventions for parameters in an entity class 6. Conventions for name, type, and size 6. By Convention, the nullability of a property is based on.

NET type 6. An EF Core naming convention identifies primary keys 6. Configuring via Data Annotations 6. DataAnnotations 6. Configuring via the Fluent API 6.

A better way to structure your Fluent API commands 6. Excluding properties and classes from the database 6. Excluding a class or property via Data Annotations 6.

Excluding a class or property via the Fluent API 6. Configuring model-level query filters 6. Setting database column type, size, and nullability 6. The different ways of configuring the primary key 6.

Configuring a primary key via Data Annotations 6. Configuring a primary key via the Fluent API 6. Adding indexes to database columns 6.

Configuring the naming on the database side 6. Configuring table names 6. Configuring the schema name, and schema groupings 6. Configuring the database column names in a table 6. Using specific database-provider Fluent API commands 6. Use validation Data Annotations wherever possible 6.

Example book pages

Use the Fluent API for anything else 6. Configuring shadow properties 6. Configuring backing fields 7. Defining some relationship terms 7. What navigational properties do you need?

Configuring relationships 7. Configuring relationships By Convention 7. What makes a class an entity class? An example of an entity class with navigational properties 7. When does By Convention configuration not work? Configuring relationships by using Data Annotations 7.

The ForeignKey Data Annotation 7. The InverseProperty Data Annotation 7.

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Fluent API relationship configuration commands 7. Creating a one-to-one relationship 7. Creating a one-to-many relationship 7. Creating a many-to-many relationship 7. Additional methods available in Fluent API relationships 7. Less-used options in Fluent API relationships 7.

Alternative ways of mapping entities to database tables 7. Configuring advanced features and handling concurrency conflicts 8. Configuring a scalar user-defined function 8. Adding your UDF code to the database 8.

Using a registered scalar UDF in your database queries 8. Setting a default value for a database column 8. Adding a constant as a default constraint 8. Adding an SQL fragment as a default constraint 8. Creating a value generator to generate a default value dynamically 8. Marking database-generated properties 8.

Why do concurrency conflicts matter? Handling a DbUpdateConcurrencyException 8. The disconnected concurrent update issue 9.It was created during a time where teams, influenced by the agile movement, were less than enthusiastic about using UML.

Adding a constant as a default constraint 8. This tutorial uses the Database First workflow. Web Services. OK, close. System Context diagram: In most cases, the system context diagram will change very slowly, as this describes the landscape that the software system is operating within.

Martin Clean Code Collection Collection.

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