SQL for Beginners: A Guide to Excelling in Coding and Database Management

Sql for beginners

A guide to excelling in coding and database management

Vere Salazar

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Table of contents

Introduction

Chapter 1: what is sql

Chapter 2: control flow tools

Chapter 3: tool and database structure

Chapter 4: tables

Chapter 5: learning function

Chapter 9: data types

Conclusion

Introduction

Sql is a programming language, that stands for ‘structure,d que,ry language,,’ and it is a simple, language, to le,arn, conside,ring it will allow inte,raction to occur be,twe,e,n the, diffe,re,nt database,s that are, in the, same, syste,m. this database, syste,m first came, out in the, 70s, but whe,n ibm came, out with its prototype, of this programming language,, the,n it starte,d to se,e, a growth in popularity, and the, busine,ss world starte,d to take, notice,.

The, ve,rsion of sql that was initially use,d by ibm, known back the,n as oracle,, was so succe,ssful that the, te,am be,hind it e,ve,ntually le,ft ibm and be,came, its own company. oracle,, thanks to how it can work with sql, is still one, of the, le,ade,rs in programming language,s, and it is always changing so that it can ke,e,p up with e,ve,rything that is ne,e,de,d in the, programming and database, manage,me,nt world.

The, sql is a se,t of instructions that you can use, to inte,ract with your re,lational database,. while, the,re, are, a lot of language,s that you can use, to do this, sql is the, only language, that most database,s can unde,rstand. whe,ne,ve,r you are, re,ady to inte,ract with one, of the,se, database,s, the, software, can go in and translate, the, commands that you are, give,n, whe,the,r you are, giving the,m in form e,ntrie,s or mouse, clicks. the,se, will be, conve,rte,d into sql state,me,nts that the, database, will alre,ady be, able, to inte,rpre,t.

If you have, e,ve,r worke,d with a database,-drive,n software, program, the,n it is like,ly that you have, use,d some, form of sql in the, past. like,ly, you didn’t e,ve,n know that you we,re, doing this, though. for e,xample,, the,re, are, a lot of dynamic we,b page,s that are, database, drive,n. the,se, will take, some, use,r input from the, forms and clicks that you are, making and the,n will use, this information to compose, a sql que,ry. this que,ry will the,n go through and re,trie,ve, the, data from the, database, to act, such as switch ove,r to a ne,w page,.

To illustrate, how this works, think about a simple, online, catalog that allows you to se,arch. the, se,arch page, will ofte,n contain a form that will just have, a te,xt box. you can e,nte,r the, name, of the, ite,m that you would like, to se,arch using the, form, and the,n you would simply ne,e,d to click on the, se,arch button. as soon as you click on the, se,arch button, the, we,b se,rve,r will go through and se,arch through the, database, to find anything re,late,d to that se,arch te,rm. it will bring those, back to cre,ate, a ne,w we,b page, that will go along with your spe,cific re,que,st.

For those, who have, not spe,nt that much time, at all le,arning a programming language, and who would not conside,r the,mse,lve,s programme,rs, the, commands that you would use, in sql are, not too hard to le,arn. commands in sql are, all de,signe,d with a syntax that fits in with the, e,nglish language,.

At first, this will se,e,m complicate,d, and you may be, worrie,d about how much work it will be, to ge,t it se,t up. but whe,n you start to work on a fe,w code,s, you will find that it is not that hard to work with. ofte,n, just re,ading out the, sql state,me,nt will he,lp you to figure, out what the, command will do. take, a look at the, code, be,low:

As you e,mbark on this journe,y to le,arn sql, you must unde,rstand that the, se,cre,t to be,coming an e,xpe,rt on any programming language, is practice,. the, more, you practice,, the, be,tte,r you will be,come,! practice, hard; re,me,mbe,r the, fundame,ntals and focus on innovation!

Many companie,s are, going to spe,nd the,ir time, working with a database, of some, kind. we, live, in a world whe,re, te,chnology and data are, around us all of the, time,, and be,ing able, to use, that data can make, the, diffe,re,nce,. it can he,lp us to le,arn more, about our custome,rs, know how to re,duce, the, waste, that we, are, finding. it can make, it e,asie,r for us to be,at out the, compe,tition and provide,s us with an e,xce,lle,nt way to make, smart busine,ss de,cisions ove,rall.

This is whe,re, the, sql language, is going to come, into play. othe,r coding language,s can handle, some, of our ne,e,ds whe,n it come,s to coding and looking through database,s, but the, sql option is ofte,n one, of the, be,st one,s that we, can choose,. we, will find that this is a language, that we, can work with whe,n we, want to cre,ate, the, table,s for our database,s, put things toge,the,r in our database,s, and so much more,.

Whe,n you are, re,ady to le,arn more, about the, sql language, and what it can do for you and the, work that you can do with some, of your database,s, without be,ing too difficult of a language, to le,arn more, about, make, sure, to che,ck out this guide,book to he,lp you ge,t starte,d.

Chapte,r 1: what is sql

What is mysql?

Mysql is a tool (database, se,rve,r) that use,s sql syntax to manage, database,s. it is an rdbms (re,lational database, manage,me,nt syste,m) that you can use, to facilitate, the, manipulation of your database,s.

If you are, managing a we,bsite, using mysql, asce,rtain that the, host of your we,bsite, supports mysql too.

He,re,’s how you can install mysql in your microsoft windows. we, will be, using windows be,cause, it is the, most common application use,d in compute,rs.

Structure,d que,ry language, or sql is a compute,r programming language, that is typically use,d for storage,, re,trie,val, and manipulation of data that is store,d in the, re,lational database,. this is the, standard compute,r programming language, use,d for rdbmss (re,lational database, manage,me,nt syste,ms) like, oracle,, mysql, and ms acce,ss, in addition to many othe,rs. with that said, the,