| Layered E-R Model Based Input Technology |
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| 作者姓名： | LUO Jun LU De-wen CHEN Song LI Qian |
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| 摘 要： | The traditional E-R's model can abstract the real world strongly, but the relationship among entities in E-R's model is very mixed and disorderly .In order to improve the productivity of the module of data input,the layered E-R model based input technology is presented. The logic model( relational model) produced by the traditional E-R model is layered by primary keys. According to the layered model ,the input interface is produced .First the input interface of 1th-tier entity is produced .By using the input interface of 1th-tier entity ,the input interface of 2rd-tier entity is produced ,until the input interface of the last tier is produced.
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| 关 键 词： | E-R model layered model database lnput interface |
| 修稿时间： | 2003/3/10 0:00:00 |
Layered E-R Model Based Input Technology |
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| LUO Jun,LU De-wen,CHEN Song,LI Qian.Layered E-R Model Based Input Technology[J].Storage & Process,2003(7):21-23. |
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| Authors: | LUO Jun LU De-wen CHEN Song LI Qian |
| |
| Abstract: | The traditional E-R's model can abstract the real world strongly, but the relationship among entities in E-R's model is very mixed and disorderly .In order to improve the productivity of the module of data input,the layered E-R model based input technology is presented. The logic model( relational model) produced by the traditional E-R model is layered by primary keys. According to the layered model ,the input interface is produced .First the input interface of 1th-tier entity is produced .By using the input interface of 1th-tier entity ,the input interface of 2rd-tier entity is produced ,until the input interface of the last tier is produced. |
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| Keywords: | E-R model layered model database lnput interface |
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