In this course, we’ll be looking at database management basics and SQL using the MySQL RDBMS. The course is designed for beginners to SQL and database management systems, and will introduce common database management topics.
Throughout the course we’ll be looking at various topics including schema design, basic C.R.U.D operations, aggregation, nested queries, joins, keys and much more.
You can get PopSQL to follow along here: https://popsql.com
🔗Company Database Code: https://www.giraffeacademy.com/databa…
⭐️ Contents ⭐
What is a Database?
Tables & Key
MySQL Windows Installation
MySQL Mac Installation
Update & Delete
Company Database Intro
Creating Company Database
More Basic Queries
ER Diagrams Intro
Designing an ER Diagram
Converting ER Diagrams to Schemas
SQL stands for Structured Query Language. SQL is a scripting language expected to store, control, and inquiry information put away in social databases. The main manifestation of SQL showed up in 1974, when a gathering in IBM built up the principal model of a social database. The primary business social database was discharged by Relational Software later turning out to be Oracle.
Models for SQL exist. In any case, the SQL that can be utilized on every last one of the major RDBMS today is in various flavors. This is because of two reasons:
1. The SQL order standard is genuinely intricate, and it isn’t handy to actualize the whole standard.
2. Every database seller needs an approach to separate its item from others.
Right now, contrasts are noted where fitting.
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In this course, we’ll be looking at database management basics and SQL using the MySQL RDBMS.
⭐️ Contents ⭐
⌨️ (0:00) Introduction
⌨️ (2:36) What is a Database?
⌨️ (23:10) Tables & Keys
⌨️ (43:31) SQL Basics
⌨️ (52:26) MySQL Windows Installation
⌨️ (1:01:59) MySQL Mac Installation
⌨️ (1:15:49) Creating Tables
⌨️ (1:31:05) Inserting Data
⌨️ (1:38:17) Constraints
⌨️ (1:48:11) Update & Delete
⌨️ (1:56:11) Basic Queries
⌨️ (2:08:37) Company Database Intro
⌨️ (2:14:05) Creating Company Database
⌨️ (2:30:27 ) More Basic Queries
⌨️ (2:26:24) Functions
⌨️ (2:45:13) Wildcards
⌨️ (2:53:53) Union
⌨️ (3:01:36) Joins
⌨️ (3:11:49) Nested Queries
⌨️ (3:21:52) On Delete
⌨️ (3:30:05) Triggers
⌨️ (3:42:12) ER Diagrams Intro
⌨️ (3:55:53) Designing an ER Diagram
⌨️ (4:08:34) Converting ER Diagrams to Schemas
📺 The video in this post was made by freeCodeCamp.org
The origin of the article: https://www.youtube.com/watch?v=HXV3zeQKqGY&list=PLWKjhJtqVAblfum5WiQblKPwIbqYXkDoC&index=8
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When working in the SQL Server, we may have to check some other databases other than the current one which we are working. In that scenario we may not be sure that does we have access to those Databases?. In this article we discuss the list of databases that are available for the current logged user in SQL Server
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In SSMS, we many of may noticed System Databases under the Database Folder. But how many of us knows its purpose?. In this article lets discuss about the System Databases in SQL Server.
Fig. 1 System Databases
There are five system databases, these databases are created while installing SQL Server.
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Database Administration consists of everything essential for managing a database. This makes it
accessible as per your need. The DBA is the person who maintains, backs up and ensures the data
generation and consumption. You can access them by today's organizations through their IT systems.
The DBA plays a vital role in many of today's IT agencies, and by extension, their organizations as a
Consider, for example of a commercial bank. The DBA is the person who ensures that the bank teller
has fast, simple access to your records. Therefore you can access your bank balance and transaction
history easily. For this case, the DBA is an application database administrator and a general SQL DBA
position. This is responsible for most aspects of the databases of the organization. It isn’t the only form
of SQL DBA though. In this article let us go through duties and specializations of SQL DBA training
Duties of SQL DBA administrator
The duties of a database administrator can include:
Installing and updating the database server and or application software.
Planning and allocating the physical requirements of the database system. The activities include memory, storage space, network requirements, and so on. Modifying the database configuration using input provided by application developers.
Creating user profiles, and maintaining device protection by conscientious user permissions allocation.
Ensure compliance with the vendor license agreement for the database. This includes a number of installations, and takes care of licensing renewals.
Create a database backup and recovery strategy. Then test the backups regularly to ensure usability.
Monitoring technological support for all database systems and software related to these.
Generates reports by querying from the database as required. These reports can take the form of pre-formatted reports using the application frontend. Besides includes database administrator’s custom-made ad hoc reports.
Track and improve the performance of the database. You can either use manual or automated methods. This may be the most critical duties of a SQL DBA.
Migration of database instances into new hardware and software models. This is from premise to cloud-based applications, and vice versa.
Now that you have read about the duties let us go through different specializations a SQL DBA can acquire.
SQL Database administrator specializations
The term ‘doctor’ may refer to a wide range of specializations. Similarly the position of database administrator often includes a wide range of sub-specializations. The SQL DBA mentioned is the most popular one. It is the one who works for a company in-house or on contract. This helps to keep its internal databases chugging along optimally. The various SQL DBA jobs specializations are as follows.
There are also database managers who mainly build and construct databases. They work as part of a team, often in a software development company with more speciality. The database would be part of a larger framework for some particular business needs. In the commercial bank example earlier, the bank most likely buys or leases the software.
This is from an information communication and technology (ICT) firm. The firm specializes in banking software to operate its banking operations. Backed by a database, which is the backend storage for all the data, develop this banking software. You may build this by a team of professional SQL DBAs (more aptly called ‘database designers’). They work with business analysts and others who are familiar with banking operations. This is to develop functions and modules for the different applications. This is to ensure that all bank functions you create reflect in the database structure.
Quality SQL DBA or Tuning SQL DBA:
It is another type of database administrator. You may use this administrator in the optimization and enhancement of the performance. Databases parts of complex software. Simply put, the internal structure of a database and compose of data contained in tables. Using indexes which read like the table of contents of a book can then optimize data access. SQL DBAs help make sure to make a design for the database to take advantage of the physical or virtual hardware.
This means that you need to be able to spread data between multiple disks. Therefore it allows the database to allow better use of the memory or RAM. Besides it manages remote database network traffic. In ‘distributed setups,’ some databases split from multiple servers. Some databases may get so complex. Therefore they require a SQL DBA that focuses solely on improving performance. However, a non-specialist SQL DBA is commonly enough for smaller, single-company databases. for more SQL server dba online course
Application SQL DBA
A third category of database administrator is Application SQL DBA. Specifically, this function focuses on incorporating databases into the applications using them. Browsing most databases needs typically knowledge of a particular type of query language. The Organized Query Language, or SQL, is the most popular. Most users won’t learn how to use and navigate SQL.
Instead, they’ll use a front-end program to perform their required tasks. In a commercial bank, this application is the banking program itself . It is the SQL DBA job to ensure proper contact between the database and the programmer. SQL DBA uses it, and you may share reliable results between the two. For example, the database returns the correct amount and not.
Path to become a SQL DBA
There are two key paths to becoming a database administrator.
Focusing on becoming a SQL DBA from the start of an IT career or
Starting in a general ICT field, such as support or growth from the helpdesk, and slowly becoming more skilled in database management.
Either way, being a professional database administrator won’t occur overnight. You first need to learn other skills that are also important in most ICT careers.
SQL DBA Skills:
The important skills for a SQL DBA are as follows.
Excellent troubleshooting skills
When faced with a question, particularly one you haven’t seen before, the ability to think through the possible causes and then remove or logically follow them to the end is absolute. A successful SQL DBA is one who can see a mistake, and then quickly find potential causes and create possible solutions.
Logical thinking, common sense and above-average memory:
It is also important to have the natural ability to think methodically using an elimination-based approach coupled with a good memory. This includes the ability to remember technical information about various systems and technologies that are important to your configuration, such as how to increase the size of a table in your SQL Server database, how to connect a new disk to your Linux server and how to remove a user in your PostgreSQL database. Similarly, bearing in mind some basic details about your particular environment (Do you work in a LAN or WAN? What are the passwords of the database administrators? How many users do you have? When is your next audit of the database? Where are your backups stored?) is essential.
Curiosity and a deep desire to learn:
Curiosity and ambition should help ensure that your career as a database administrator doesn’t stagnate. The nature of IT is constantly changing — only the desire and appetite to keep learning new things can keep you from going backwards.
It is a good idea to have one or more commercial database systems approved. Most organizations should concentrate on recruiting people with qualifications and SQL DBA training in the applications that they use similar database. You can always go for SQL server dba training for getting expertise in the topic.
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