Post by account_disabled on Dec 7, 2023 0:19:40 GMT -5
The problem I faced arose several years ago mainly due to the attachment of decisionmakers to solutions considered proven and the reluctance to search among developers in search of new possibilities. Project an application that is used to book bus tickets. Final product seat reservation and ticket purchase. Due to the excessive complexity of the topic let's limit ourselves only to the connection search engine. How the application works before the user books a ticket he or she should first indicate the stop from which he or she wants to depart and the destination stop from the list of available ones.
Modeling In an RDBMScompliant approach we will need at least three tables to model this area. The first one will be the register of stops the second one will be the register of routes on which the stops are located. In the third table we will assign Email Marketing List individual stops to specific routes. RDBMScompatible table and relationship schema Figure. RDBMScompatible table and relationship schema Troublesome RDBMS It is worth paying attention to a typical table problem with mapped relations between individual rows of joined tables. The rows in it contain cells filled with unreadable numbers usually belonging to the indexed primary keys of the tables in the relation.
Deciphering the origin and meaning of these numbers can sometimes take a lot of effort. The more complex the table the greater it is. In our example such a connecting table could look like this Neo j table Table. An example fragment of the possible content of the 'trackbusstop' table Such creations can be found in ManytoMany relationships. They can be particularly troublesome when the project has a lot of tables defined foreign keys and relationships. They are also problematic when there is a whole lot of data in the scripts needed to feed test database instances for integration verification of the correctness of the implementation.
Modeling In an RDBMScompliant approach we will need at least three tables to model this area. The first one will be the register of stops the second one will be the register of routes on which the stops are located. In the third table we will assign Email Marketing List individual stops to specific routes. RDBMScompatible table and relationship schema Figure. RDBMScompatible table and relationship schema Troublesome RDBMS It is worth paying attention to a typical table problem with mapped relations between individual rows of joined tables. The rows in it contain cells filled with unreadable numbers usually belonging to the indexed primary keys of the tables in the relation.
Deciphering the origin and meaning of these numbers can sometimes take a lot of effort. The more complex the table the greater it is. In our example such a connecting table could look like this Neo j table Table. An example fragment of the possible content of the 'trackbusstop' table Such creations can be found in ManytoMany relationships. They can be particularly troublesome when the project has a lot of tables defined foreign keys and relationships. They are also problematic when there is a whole lot of data in the scripts needed to feed test database instances for integration verification of the correctness of the implementation.