The inheritance mapping relationships in EF TPH, TPT and TPC explanations, and a few concrete examplesThis section explains the inheritance mapping relationship in EF, which is divided into TPH, TPT, TPC. Specific: 1.tph:table Per Hierarchy This is the default inheritance mapping relationship for EF: A table holds all the columns of the base class and subclass, and the automatically generated discriminator
In the previous blog post you saw that there is three different approaches to representing an inheritance hierarchy and I Explained Table per Hierarchy (TPH) as the default mapping strategy in EF Code first. We argued that the disadvantages of TPH is too serious for our design since it results in denormalized schemas that CA n become a major burden in the long run. In today's blog post we are going to learn about Table per Type (TPT) as another inheri
1. Table Per Hierarchy (TPH): Create only one table that maps all the properties in the base class and subclass to the columns in the table2. Table Per Type (TPT): Establishes a table for the base class and each subclass, and each table corresponding to the child class contains only the columns for the attributes that are unique to the subclass3. Table per concrete (TPC): Establishes a table for each subclass that corresponds to the column and subclas
Public classBlog { Public intId {Get;Set; } PublicDateTime CreationDate {Get;Set; } Public stringshortdescription {Get;Set; } Public stringTitle {Get;Set; } Public stringAbouttheauthor {Get;Set; } } Public classPictureblog:blog { Public stringpicdescription {Get;Set; } } Public classVideoblog:blog { Public stringvideodescription {Get;Set; } }Configure the data tables formed by the TPH:Configure the data table for TPT formation:Configur
Welfare of kids shoes-GitHub Chinese INS, kids shoes-github
I am very excited to see a plug-in a front-end group today! I will share the steps for implementing the plug-in!
After the plug-in layout is complete, it will inevitably be a little excited! I removed the chrome plug-in Tampermonkey_v4.0.25.crx and added the new script to main. js. It is also finished. I feel no difference!
If the plug-in downloade
Introduction to the kids log system
As the business and system scale grows, the number of machines in Our backend is also increasing, bringing about many new problems, such as unified system release and upgrade, monitoring, and so on. We believe that everyone has their own ideas and practices for solving these problems. This blog post does not intend to expand on these problems, but starts from one of the points-logs. No matter how a system is impleme
How much does the Little Apple kids join? 2014-10-15 21:49 Small Apple Children's wear design team of different styles, design of children's clothing personality full, style diversification, from cowboy style to Lady lattice, from hip-hop to Princess style, dozens of styles of style to choose from, little Apple children's wear has always been guaranteed to stand on the top of fashion. How much does little Apple ki
word of mouth, small apple children's clothing whole liar to cheat, the Noble Faction Wuhan Co., Ltd., the famous Fashion Wuhan Co., Ltd., the market will continue to expand, small apple children's wear against cheats, to join the brand, sit and enjoy the rolling money!Little Apple Children's wear how, in today's pursuit of individuality, many people for children's wear technical support standards are also to be full of personality, so that there will be more fashion favorite costumes hot mom l
In the recently leaked Windows 8.1 build 9369, another netizen has discovered a new feature-"Kids Corner", which users familiar with Windows Phone 8 should not be unfamiliar with.
Kids Corner
The user found a "Kids Corner" icon in the Imageres.dll file of Windows 8.1 build 9369, a function that assists parents in managing their children's use of the comp
yunrou is also involved.
Ma Nan did not think much about the Yin Mo headquarters printing. Although he had relied on many external forces, his own efforts were inseparable.
"You also helped me to join the star castle children's clothing ?"
Song Jin, the distinguished son of the three Emperors of the holy dragon, was somewhat hesitant at the moment. The two friends reminded him that they had two completely different ideas, which made him confused.
"You don't have to worry about me. I will win th
Trade union members exclusive access to "East Haven -Kids Circle " Amusement Expo tickets Market Price:RMB 168 /child + 20 RMB /adult, member Exclusive:100 RMB /Set (children under 0.9 meters) all self-entertainment activities can be experienced and limited to 13 times in the field . "East Haven -Children 's Circle" Amusement exposition in the Mid-Autumn Festival celebrates 11 on the occasion of the explosion of the city, here gathered in the mos
Send a fun website to the kids online zoo to see real-time camera animals in the zoo.Very interesting, no need to see the zoo in the hot weather.Http://zoo.baidu.com/video.html650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/6D/2E/wKioL1Vd2miwAFRKAAj-K3AzT5I726.jpg "style=" float: none; "title=" 2015-05-10_174255.jpg "alt=" Wkiol1vd2miwafrkaaj-k3azt5i726.jpg "/>650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/6D/33/wKiom1Vd2O_w7WMJ
Kids Learn data structure (10): Cardinal sort one, basic ideaUnify all the values to be compared (positive integers) to the same digit length, with a short number of digits preceded by 0. Then, start with the lowest bit (that is, single digit) and order one at a time. Thus, from the lowest bit to the highest order, the sequence becomes an ordered series.Unlike other sorts, cardinality sorting does not involve a number of interchanges.Cardinality sorti
Goat's Kernel Heap feng shui: heap spray technology in "Big Kids 'pool"
0x01 technical status of Kernel Vulnerability Exploitation
The exploitation of typical kernel vulnerabilities of the "arbitrary address writing arbitrary data" type usually relies on two methods. One is to modify the data structure of some kernel spaces, this method is easy to implement locally because of the random address space allocation (KASLR) mechanism of the Windows Kernel
Even the kids stated that GHD hair straightener huiyi points in the operation, as a end result of my mood, therefore, the mass removing me... ... When I cents tactic likely think, do exactly before and appropriate after strike inside moment, I'm scared I Suzaku a enormous collection of numerous years ago once the stars of God, its precisely supplied that youngsters are times that sentiment reincarnation shipped, this go on to provide me to be a discip
N boxes m people choose to take the prize box in turn and then put it back to get the expected Prize
You can calculate the expectation of a prize not selected. Minus n is the answer.
# Include
Sgu 495. Kids and prizes expectations
Kids, you don't need to buy this water
After 20 hours,Rescued by rescue personnel.She is a primary school student in Wudu Education Center, Hanwang town, Mianzhu County,She is too thirsty. She wants to drink water.Considering that qingqing's viscera may be broken,Rescue workers fed her water with the lid of the water bottle.Qingqing took out 2 yuan from his pocket,She asked, "Can I buy a bottle ?"
My heart hurts and my tears flow.I know, kid,You
----->new---- >Name, recommended python+ version number---->Interpreter excutable fill in the Python.exe under the Python installation path (the default path is C:\Users\Administrator (user name when Python is installed) \appdata\local\programs \python\python36\python.exeConfiguration End 4.hello world!Process:1. Create a new Python project that is guided as follows: New >project>pydev>pydev Project2. Similar to Java development, new SRC Source directory, new package, new py file, wri
Guide
I found a video of the children having a good time in their computer classroom. I don't know where they are, but I guess it's in Indonesia or Malaysia. Video please take your own ladder: Https://youtu.be/z8taQPomp0Y
Run the train under the Linux terminalThere is no magic here. Just a command-line tool called "SL". I think it was developed for fun in the case of LS wrong. If you have ever worked on a Linux command line, you will know that LS is one of the most commonly used
Kids Learn data structure (7): Quick SortFirst, quick sort(a) Basic ideasSelect a datum element, usually select the first element or the last element, through a scan, the waiting sequence is divided into two parts, some smaller than the Datum element, part is greater than the datum element, at this time the datum element in its correct position after the order, and then the same method recursively sorted the two parts of the division.(ii) Example 6-1.
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