Relational databases work well with structured data. Organizations that have a lot of unstructured or semi-structured data should not be considering a relational database. These types of databases are also sometimes referred to as non-relational databases. One advantage of NoSQL databases is that developers can make changes to the database on the fly, without affecting applications that are using the database. Like other cloud-based applications, cloud databases offer flexibility and scalability, along with high availability.
Cloud databases are also often low-maintenance, since many are offered via a SaaS model. Also referred to as column data stores, columnar databases store data in columns rather than rows. Wide column databases, also known as wide column stores, are schema-agnostic.
Data is stored in column families, rather than in rows and columns. Highly scalable, wide column databases can handle petabytes of data, making them ideal for supporting real-time big data applications.
An object-oriented database is based on object-oriented programming, so data and all of its attributes, are tied together as an object.
Like relational databases, object-oriented databases conform to ACID standards. One of the simplest types of NoSQL databases, key-value databases save data as a group of key-value pairs made up of two data items each.
Key-value databases are highly scalable and can handle high volumes of traffic, making them ideal for processes such as session management for web applications, user sessions for massive multi-player online games, and online shopping carts. Hierarchical databases use a parent-child model to store data. If you were to draw a picture of a hierarchical database, it would look like a family tree, with one object on top branching down to multiple objects beneath it.
Originally developed by IBM in the early s, hierarchical databases are commonly used to support high-performance and high availability applications. The package includes just about all of the functions that you will need in order to administer a database. One thing that is missing from this suite is a form builder that would enable you to create front ends to give your user community safe and easy access to the database.
This is a paid tool but is very reasonably priced. You can buy the standard package which includes a year of updates and support or opt for more expensive packages with longer support periods. Another dimension in the pricing structure of RazorSQL is the number of people who will use it. This group of utilities includes a graphical tool that enables you to design a database and decide on the tables for it. The database diagrams produced by the tool are useful as components of your project library and system documentation when you are creating a new database or adapting an existing instance.
The Object Explorer is a straightforward graphical representation of a database, showing the tables that have already been created. Template Explorer is a bundle of object creation scripts with prompts so you can enter the object names as you run them. Solution Explorer is deprecated — it is included in the package but no longer supported. If you are creating a new database, you start off with the Entity-Relationship Diagram creation tool in the package. The detail screens on this diagram enable you to define all of the requirements for the objects in the database.
The SQL Editor supports the object creation tasks of your database creation project. The Editor presents color-coding for statements and clauses, helping you see immediately whether you have made an error in syntax. You can see where objects and their links need to be optimized as the contents of the database grow. The performance dashboard includes attractive graphical data representations, which make problem recognition a lot easier. The Database Migration function in the Workbench is able to manage backups.
Support for this tool is supplied by a user community forum. TeamDesk is a little different from the other tools on this list. You create an application, such as a contact utility or an invoice creation and query screen and the tool generates a database behind the scenes to support your new screens. The tool includes a library of templates, which helps you work out the layout of your new screens. This is a great assistant that provides you with fields that you might not have thought to put on your new form.
You can access the system through a web browser running on any operating system. The configuration of this service and the design of the interface is organized to eradicate the need for you to employ an expert database and network administrator. This makes the tool ideal for a small enterprise, such as an individual or small partnership of owner-workers.
This online package is available in three service levels , which makes it suitable for small to mid-sized businesses. It is also possible to create a database by uploading a spreadsheet. This will create the structure of the database including necessary tables and populate them, as well, from the data contained in your spreadsheet. The free account is active for 14 days.
Then you will need to pay for the service. The software for the tool installs on Windows and Mac OS. The interface can be adapted to different themes. The connection between the front end and your database is encrypted and you can also apply multi-level authentication to access the database application.
It is a support facility for developers and DBAs. The SQL assistant built into the tool is an assistant to trained programmers rather than an automated script generator for untrained staff.
The data browser reads in records from a selected table, enabling you to view, edit, or delete them. An SQL editor helps you to develop scripts through color-coded statement and clause recognition. This editor includes statement formatting and an autocomplete feature. A data management function enables you to export a database including its data and import that data back again. This is a useful assistant for backup and recovery procedures.
You can get a free trial version of the system, which has operational limits. The pricing structure is based on the number of terminals that you install the software on. The license lets you use the software forever, but the support package that is included lasts for only one year. You get a 7-day money-back guarantee. Sequel Pro is only available for Macs. It installs on Mac OS This is a free SQL management tool, but you are able to make a donation to the developers if you wish.
This tool is able to interface with MySQL relational databases. You can connect to any database as long as the computer it is on is accessible via the network. This is an open-source project, so you can copy the source code and adapt it. If you have programming skills you could also contribute to the project and submit any improvements you make to be adapted into the core program for others to download. The software is updated every night.
The layout of the Sequel Pro window is a little like a file explorer. A left-hand pane shows all of the tables in your database and the main panel shows all of the records in the currently-selected table. You can also enter SQL queries into the interface and get the results shown in the data viewer. It is possible to use Sequel Pro to export data from your database.
The tool will also import stored data back into your database, or will create the same tables in another database instance and populate it with the data that you backed up.
This software will run on Windows and Linux. You can specify that the app enforces two-factor authentication for access control. The tool is a little complicated to set up, so it would be better as an aid to those who have technical training. The actions that the tool allows you to perform on your data also suggest that this is not a desktop database application for end-users in a big corporation.
You can create, alter, and remove tables and other database objects with this tool. It is also possible to manage user accounts on the database through phpMyAdmin. An SQL editor enables you to develop and execute your own scripts in the relational database. Other functions include the ability to export the entire database to file through the tool — it will also guide you through importing the instance back in from those files.
The tool is a useful aid to administration because it can export and import databases. You can schedule backups of your database to occur overnight. It is also possible to use SQLyog in order to synchronize between two versions of the same database. Thus, you can mirror your databases for instant recovery, or in order to maintain a test database. It will also examine your SQL statements and recommend how they could be improved to enhance the speed that results are returned.
The features of this SQL management tool are very sophisticated, and it is aimed at database administrators. However, its ease of use makes it a good option for individuals running a database without extensive training.
It is a useful facility to close your skills gap. This tool is charged per user. It is available on a day free trial. This is a cloud-based service that stores your database engine for you.
So, you have two options; you could either use this service to back up your onsite database and optimize it, and copy down the improved database back to your home database server, or you could do away with your on-premises database entirely. A backup service is built into a Knack subscription.
Whether or not the continuity of this service is enough to provide you with recoverability is a risk that you would have to assess yourself. This is a very good solution for small businesses. For example, you may want to see all the tasks assigned to a specific user or all the meetings planned for the next seven days. To do so, create custom searches. You can create searches at different levels throughout your account. Create searches at the application level to see them in all the projects derived from this specific application.
You can do so when the information you need to access is only found in that specific project, too. Each user can even create their own searches on his or her dashboard. With the custom searches feature, you make sure you can access your data efficiently.
When you input all your data into one account, you may worry about security and accessibility to the data inside your team. We understand that all users are not created equal. This is why all accounts include the role-based security feature. First thing first, you have to create all the users you need.
If you have a lot of users, you may even want to create user groups to facilitate the assignation of permissions. Once your users and user groups are created, you can then assign some permissions to each of them. The permissions you can assign cover a lot of different scenarios. You decide according to your own needs.
Whenever you need to make changes to your users, user groups, or their permissions, you can edit all of the above in just a few clicks, within seconds, without having to call a technician.
You are the master of your own account. Out of all our examples of database applications, SQL is the language most IT experts use to interact with relational databases. These interactions are called transactions. To be efficient and accurate, transactions must be ACID atomic, consistency, isolation, durability. Atomic means the transaction is all or nothing. Consistency refers to the fact that the database must remain in a consistent state before and after the transaction.
Isolation means all transactions must be independent of one another. There will be a series of calls or queries to send the money from one account to the other. He must answer and complete all calls in order to complete the transaction. Each call to the database will only be related to our transaction isolation. Examples of SQL-based databases citizens use every day include banking systems, computerized medical records, and online shopping to name just a few.
NoSQL refers more to what it is not than to what it is. This database application refers to a language system not using SQL. It is mostly used for unstructured data in situations where the ability of the database to accept create or access get large amounts of data quickly is required.
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