1- Get data entity object:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5sX3PdA1aQAr41Rv-fPr9gg6hay5DeZ8DLMt8rpLmF9A0O63cWeoDx_SqwXIWCRzPDQVc420AatgwO8eV8q5p5QJbz77F3CK_e0abNM3pMWTBeG4fre5Akhj6hhomzWBJyGF-4-q37KU/s400/1.png)
2- On iterating of data entity data sources if we need previous data source data, we can achieve
this by this code:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhtiLeACIbG1se-YQfN5V4RIhRMa_qulpkf0ubBVHDj2S6rjNVl4ie4wWyxHW0yRLpBUrheIUsuu903eLLLN9ZPekxmaEzU8m2N6sZeVhcrbw6i3t9E8jgigEZrjMlMN5QM06EW2RtNhKs/s640/1.png)
3- If we need to change the database operation at run time, there are four types of operations we can use as shown below:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhJp6IIVzEDC_8zmbVlBJwx0uMTjqhhdpCfvprUfHedzpeQBNo_ffcqCeidjNOViHDk8RkWGwAp3QoK_N_7FZdH4-qVsokqMUixQQuw9_5F0Rv_xpxj_bPGrKyM0OoeqXl4WHRWqlsUnsk/s400/1.png)
4- To Get or Set the table buffer:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgE2Nl2h_m4qwsq9wiJvDldlY6MVhRWYzVrpv_3XcaiLDuwFYqOBzBTzPqogwyrwy6lLnkSROwbHLx0YCygrU_Ud2UFITsiRYXXYurvCQabv43aUfNuanupXFCm6ONfoIfJIK9pEf2QuxE/s1600/1.png)
5- Update data Source at run time:
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjVNuM-v0H-DTZnwH5zHyx2RpnqCYnFQdAgNu4I6E7LhNEyntIjlT3U_bVgsdj2mKNiOvVF5jaudcMQuUB6ji_IuI7OhxZ41rrzqTCfMNHaPI1M_OcodhjgYH7k2ZZuPxbvKzM6hUoAVe4/s400/1.png)
No comments:
Post a Comment