When you start your database design the first thing to analyze is the nature of the application you are designing for is it transactional or analytical. For instance consider a multi level marketing scenario where a sales person can have multiple sales people below them. So for such kinds of fields which are derived from other fields give a thought are they really necessary. In normalization you need to make joins with many tables and in denormalization the joins reduce and thus increase performance. then probably this rule needs to be applied. For instance in the above table we can see the primary key is created on roll number and standard.
For instance in the below diagram you can see 5th standard and fifth standard means the same. These kinds of fields are termed as repeating groups . 11 important database designing rules which i follow 4. creating reading updating and deleting records. In case of olap where we do a lot of summations calculations these kinds of fields are necessary to gain performance. One of the solutions would be to move the data into a different master table altogether and refer them via foreign keys.
Due this mind set they sometimes hit road blocks as the project moves ahead. If you watch the data closely they actually only have a key and value dating database example. These kinds of columns which have data stuffed with separators need special attention and a better approach would be to move those fields to a different table and link them with keys for better management.Below are my own 11 rules which i remember on the top of my head while doing db design. The main intention here is to fetch and analyze data as fast as possible dating database example.
They play games with you no not the fun kind of games. If you re meeting joey for dinner and he s rude to your server for no reason it s a good indicator of how he treats people in general. Either you ll be sexually frustrated hoping they ll finally come around or you ll be constantly pleasing them in hopes they ll eventually return the favor what not to do when you start dating a guy. However if you only notice a few red flags or they re not glaring they may be a product of nervousness or circumstance. When we close off our options with other men too soon we actually sabotage our ability to get the commitment and intimacy we so desire. They get too serious too fast everyone should date at their own comfortable pace.
If joey is being rude to your server and making rude comments about a couple at a different table he s probably just a rude dude. Advertisement whoever you re dating should be interested in spending time together and getting to know you not using you for an experience a story to tell or more interested in the chase than actually connecting with another person. Still being nervous and mindful of what you look like when you see them because though you know they d probably like you no matter what you wore you still want to put the effort into looking good for them. It s the biggest mistake women make and you need to stop it right now what not to do when you start dating a guy. It s a red flag raising ceremony. They re flat out disrespectful beyond playful mutual teasing poking fun at each other can be cute but there s a line.
He might be all smiles toward you early on but that s because he s still trying to impress you. If they seem to spend endlessly or don t value money the way you do that s a bad sign too. The first time you go to their apartment and are equal parts terrified that you ll knock someone over on your best behavior to the point where you ask if you can have a glass of water and holding yourself back from just ransacking the damn place for all of their most prized possessions and the stories behind each one.Keep your eye out but don t abandon ship every time you see one flapping in the wind. make him prove to you that he s worth choosing. Sure there might be a few knocked teeth and rogue elbows here and there but eventually you figure it out.
by keeping your options open and increasing the number of men you meet and date you increase the likelihood of meeting the man you ve been dreaming of rather than settling for whomever you happen to meet first.