Dapper ORM usage-Invincible ORM (conversion) and dapperorm Under Net
Reprinted from: http://www.renfb.com/blog/2011/Article/335If you like native SQL statements and ORM simplicity, you will certainly like Dapper ROM.Dapper advantages:1. Dapper is a lightweight ORM class. The Code is a SqlMapper. cs file, and a very sma
ORM Gets the property values of the associated table, ORM Table property values
orm--Relational Object Model
The eloquent ORM in Laravel is used to interact with the data table, where each database table interacts with a corresponding "model" to see the official documentation or Baidu itself. Get the property value
To understand Orm, first understand the following concepts:
What is "persistence"
Persistence: saves data (such as objects in memory) to a permanently retained storage device (such as a disk ). Persistence is mainly used to store data in the memory in a relational database. Of course, it can also be stored in disk files or XML data files.
What is
"Persistent layer"
Persistence Layer (persistence layer) is a logical layer that focuses on a spe
In the Days of wolves! Hard to win ten) Django-orm (Create, field type, field parameter) One: ORM Relational Object Mapping (Object Relational Mapping, ORM)ORM is divided into two types:DB first creates database tables in the database, etc.Code first creates a class, then creates a data table from the class, and so on.
Basic concepts of ORM (O/R mappping Object Relational mapping)
In our system, there are a large number of objects that need to be persisted, such objects may be various business documents, or our system configuration information. Other objects that are in-memory use and do not require persistent storage are not part of our discussion. In languages that support object serialization, such as C#,java, we can serialize these objects to disk files or dire
Small ORM practice code and orm practice code learned by rupeng net
After learning reflection, I watched the code written by the teacher's homework. I hope it will be useful in the future.
DOG
Namespace RupengORM {public class Dog {public Dog () {}///
Sqlhelper:
using System.Collections.Generic;using System.Configuration;using System.Data;using MySql.Data.MySqlClient;namespace RupengORM{ public clas
One, Reflection
What is reflection?
Simply put, reflection is the way to get object information dynamically at runtime, such as what properties, methods, delegates, etc. are known to the runtime.
What's the use of reflection?
Reflection not only enables you to get information about objects, but also provides the ability to dynamically invoke object methods at runtime and dynamically set, get properties, and so on.
What's the use of reflection in ORM
Szq. orm. SQL detailed instructions, szq. orm. SQL
Var connStr = ConfigurationManager. ConnectionStrings ["dbconnstr"]. ConnectionString;
SQLContext db = new SQLContext (connStr );// List QueryVar list1 = db. GetList Var list2 = db. GetList Var list3 = db. Query
// Multi-condition QueryVar query = db. Query Query. Where (s => s. Name = "B ");Query. Where (s => s. ID> 5 );Var result = query. ToList ();
// Q
Recently in the study of ORM, what kind of framework is what we wantThe significance of the development framework is
Develop more standard, more unified, not because different people write code is not the same
More efficient development, no need to reinvent the wheel, duplicate useless code, and streamline the development process
The operation efficiency is controlled, and the program stability has been improved.
The framework of
Recently in the study of ORM, what kind of framework is what we wantThe significance of the development framework is
Develop more standard, more unified, not because different people write code is not the same
More efficient development, no need to reinvent the wheel, duplicate useless code, and streamline the development process
The operation efficiency is controlled, and the program stability has been improved.
The framework of
Create an ORM framework that is used for low performance and An orm framework for low performance.Advantages of SqlSugar ORM:
1. High Performance, reaching the highest level of native performance, higher than SqlHelper performance, 30% faster than Dapper and 50% faster than EF
2. Multiple databases are supported. The SQL version is updated as quickly as possible.
Build your own PHP framework-define the ORM interface and build the php framework orm
In the previous blog, we abstracted the Controller base class to implement page rendering and return the JSON string function.
What else do we lack as a framework? Yes, you should have noticed that we have never connected to a database before, and we lack an ORM (Object Relation
In this article, we need to sort out the associations between objects in the ORM and the default transactions mapped to the relational database tables.
For basic object Association and how object Association maps to the table structure of relational database, see my previous two articles:
[1] UML Model/Relation Db Table Mapping Design For LiteMda-Draft[2] object link ing solution in O/R Mapping
To practice my english writing skill for technical atrti
High-performance ORM framework XLinq function details, high-performance orm framework xlinq
I have briefly introduced some functions of XLinq, but many functions are not mentioned. Now I have added some functions to XLinq. I will introduce all the functions this time.Design objective usage
Create TestDataContext class and User object class
Start to useQuery
LINQ:
It seems quite troublesome for the version o
To construct my own ORM
I'm sure a lot of my friends have understood what I'm going to discuss here in the previous two chapters, which is to define the O/r mapping rule based on custom attributes, and then dynamically acquire the rule by reflection to dynamically construct the SQL statement.
Because this little Thing (ORM) was born in Shenzhen, so I think, she should have a Shenzhen name, so I called her
This section describes how to use the interfaces provided by Orm. Net to display data, including grouping and sorting.
Datamanager. Get [object] GET [object] collection methods
This is the main way to get data. It can be seen from the name that GetObject is to get an object, and getobjectcolletion is to read several rows of records to get an object set. The usage mode is as follows:
Object object = datamanager.Get [object]
Or
Objectcollec
1. EF (Entity Framework)
Mainstream ORM ideas are dominated by Linq. The King has to say it is EF. Elegance and convenience are Orthodox, and it seems that its performance and actual combat performance are still to be improved. linq cannot generate ideal SQL for us, and its own performance may be compromised. this is the main problem EF has to face. EF has many advantages.
The advantages and disadvantages of Linq seem to have become one of EF's advant
ORM===Verification:1. Forced verification is performed inside the Orm.2. Orm external verification (save, update, and insert validation)Filter:Check does not contain the filter functionParameter and method change:1. Find does not contain parameters2. Split save into create and update, and add validation class parameters. The rule overwrites and overwrites3. The f
In fact, this is the first time I have published my opinion on topics related to Orm. However, since such articles already exist, I should have discussed them again this time. The reason for writing this blog post is that I have implemented an ORM framework and integrated many of my own ideas. Therefore, this article will discuss my understanding and positioning of ORM
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.