chatbot logic

two recommendations:-When using constants, it is best to use constants of the corresponding type. For example, if Table.col is a varchar type, then a query of where Table.col = 10 will not be able to use the index, and an error will occur when it encounters a value in Col that cannot be converted to a number.-unless the implicit conversion of the corresponding value is very intuitive, it is preferred to specify explicit explicit conversions with cast ()/convert ().In the above content, the unde

. NET Framework 4 When working with data in ASP, you can benefit from using the generic software model. One of these patterns is to separate the data access code from the business logic code that controls data access or provides other business rules. In this mode, these two layers are separated from the presentation layer. The presentation layer consists of pages where the site user has permission to view or change data.ASP. NET provides a v

In many new enterprise system designs implemented using SQLServer, system designers need to make key decisions on the positioning of data structures and management application logic. SQLServer has its own programming language (Transact-SQL, TSQL). developers can use it to manage data access, code transaction logic, and transaction control. Use TSQL, In many new enterprise system designs implemented using SQ

From the perspective of gctexamination, the logic knowledge and Examination Form are limited and focused. Even though there are more than a dozen courses in the software designer examination, as long as you know how to strengthen understanding and use of important knowledge points and examination forms, the examination is easier to find a pass. However, whether it is a software designer or gcttest, if it is purely for the test, it will lose the meanin

The Business Logic layer (Business Logic Layer) is undoubtedly the part of the system architecture that embodies the core value. Its focus is mainly on the development of business rules, the implementation of business processes and other business requirements related to the system design, that is, it is related to the domain of the system to deal with the logic,

Introduction: Using the Rules engine can reduce the maintenance and scalability costs of applications by reducing the complexity of components that implement complex business logic. This updated article shows how to use the open source Drools rule engine to make Java™ applications more adaptable to change. The Drools project introduces a new local rule expression language and an Eclipse plug-in that makes Drools easier to use than ever before. Most o

Stored Procedures | Encapsulation SQL Server 2005 can write stored procedures in. NET languages, so in small and medium applications, it becomes a good choice to use the stored procedure encapsulation application logic. The advantages of using stored procedures to encapsulate application logic are as follows: 1, Dba+developer Division of labor Clear. Code modularity between. Reduce database operator and

Three-stage current protectionThree-stage fixed time overcurrent protection each section action current fixed value and the action time fixed value can be independently set, each section overcurrent protection uses the same action discrimination logic, the action export condition is: For the nth segment of the current set value Three-stage protection input Delay Time to Three-stage protection soft platen input, three-phase

ORACLE application optimization: Please avoid SQL processing in a large number of cyclic logic, oracle Optimization I encountered a case a while ago: a colleague said that a previously running package was suddenly much slower than before and the execution time was very long, in the evening, the job calls this package and does not run data for several hours. So I located an SQL statement in a stored procedure in the package during the tracking and opti

SQL execution time within the cursor takes 2 seconds, previously only 30 cycles, then the SQL needs to be 2*30=60 seconds, if the number of cycles suddenly increases to 8,000 times, 2*8000=16000 seconds, this is a few hours of time. As you can imagine, this performance suddenly drops to an intolerable level! So how to optimize it? Reduce the number of cycles, of course. After a careful look at this SQL, figuring out the business logic of the man who

Analysis of. NET logic layered architecture, analysis of. net Architecture I. Basic Knowledge preparation: 　　1. layer principles: (1) Each layer is called by the upper layer in interface mode.(2) The upper layer can only call the lower layer.(3) Dependency can be divided into loose interaction and strict interaction. 　　2. Business Logic classification: (1) application l