TeFi Oracle: Oracle SmartContracts for TeFi Projects

TeFi Oracle

This repository contains the source code for a set of oracle smart contracts running on Terra blockchain.

Contracts

ContractReferenceDescription
hubdocCentral price source for all assets, redirects requests to proxies based on priority and availability
proxy-templatedocTemplate of a contract that implements the proxy standard
proxy-banddocProxy contract for Band Protocol price sources
proxy-chainlinkdocProxy contract for Chainlink price sources
proxy-feeddocCustom proxy contract that allows external sources to feed prices

Development

Environment Setup

  • Rust v1.44.1+
  • wasm32-unknown-unknown target
  • Docker
  1. Install rustup via https://rustup.rs/
  2. Run the following:
rustup default stable
rustup target add wasm32-unknown-unknown

3.   Make sure Docker is installed

Unit / Integration Tests

Each contract contains Rust unit and integration tests embedded within the contract source directories. You can run:

cargo unit-test
cargo integration-test

Compiling

After making sure tests pass, you can compile each contract with the following:

RUSTFLAGS='-C link-arg=-s' cargo wasm
cp ../../target/wasm32-unknown-unknown/release/cw1_subkeys.wasm .
ls -l cw1_subkeys.wasm
sha256sum cw1_subkeys.wasm

Production

For production builds, run the following:

docker run --rm -v "$(pwd)":/code \
  --mount type=volume,source="$(basename "$(pwd)")_cache",target=/code/target \
  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
  cosmwasm/rust-optimizer:0.11.5

or

sh build_release.sh

This performs several optimizations which can significantly reduce the final size of the contract binaries, which will be available inside the artifacts/ directory.

Formatting

Make sure you run rustfmt before creating a PR to the repo. You need to install the nightly version of rustfmt.

rustup toolchain install nightly

To run rustfmt,

cargo fmt

Linting

You should run clippy also. This is a lint tool for rust. It suggests more efficient/readable code. You can see the clippy document for more information. You need to install nightly version of clippy.

Install

rustup toolchain install nightly

Run

cargo clippy --all --all-targets -- -D warnings

Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run with: cargo test --all. For more details, please reference Unit Tests.

Download Details:
Author: terra-money
Source Code: https://github.com/terra-money/tefi-oracle-contracts
License:

#rust  #blockchain  #terra #smartcontract #oracle 

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TeFi Oracle: Oracle SmartContracts for TeFi Projects
Autumn  Blick

Autumn Blick

1593867420

Top Android Projects with Source Code

Android Projects with Source Code – Your entry pass into the world of Android

Hello Everyone, welcome to this article, which is going to be really important to all those who’re in dilemma for their projects and the project submissions. This article is also going to help you if you’re an enthusiast looking forward to explore and enhance your Android skills. The reason is that we’re here to provide you the best ideas of Android Project with source code that you can choose as per your choice.

These project ideas are simple suggestions to help you deal with the difficulty of choosing the correct projects. In this article, we’ll see the project ideas from beginners level and later we’ll move on to intermediate to advance.

top android projects with source code

Android Projects with Source Code

Before working on real-time projects, it is recommended to create a sample hello world project in android studio and get a flavor of project creation as well as execution: Create your first android project

Android Projects for beginners

1. Calculator

build a simple calculator app in android studio source code

Android Project: A calculator will be an easy application if you have just learned Android and coding for Java. This Application will simply take the input values and the operation to be performed from the users. After taking the input it’ll return the results to them on the screen. This is a really easy application and doesn’t need use of any particular package.

To make a calculator you’d need Android IDE, Kotlin/Java for coding, and for layout of your application, you’d need XML or JSON. For this, coding would be the same as that in any language, but in the form of an application. Not to forget creating a calculator initially will increase your logical thinking.

Once the user installs the calculator, they’re ready to use it even without the internet. They’ll enter the values, and the application will show them the value after performing the given operations on the entered operands.

Source Code: Simple Calculator Project

2. A Reminder App

Android Project: This is a good project for beginners. A Reminder App can help you set reminders for different events that you have throughout the day. It’ll help you stay updated with all your tasks for the day. It can be useful for all those who are not so good at organizing their plans and forget easily. This would be a simple application just whose task would be just to remind you of something at a particular time.

To make a Reminder App you need to code in Kotlin/Java and design the layout using XML or JSON. For the functionality of the app, you’d need to make use of AlarmManager Class and Notifications in Android.

In this, the user would be able to set reminders and time in the application. Users can schedule reminders that would remind them to drink water again and again throughout the day. Or to remind them of their medications.

3. Quiz Application

Android Project: Another beginner’s level project Idea can be a Quiz Application in android. Here you can provide the users with Quiz on various general knowledge topics. These practices will ensure that you’re able to set the layouts properly and slowly increase your pace of learning the Android application development. In this you’ll learn to use various Layout components at the same time understanding them better.

To make a quiz application you’ll need to code in Java and set layouts using xml or java whichever you prefer. You can also use JSON for the layouts whichever preferable.

In the app, questions would be asked and answers would be shown as multiple choices. The user selects the answer and gets shown on the screen if the answers are correct. In the end the final marks would be shown to the users.

4. Simple Tic-Tac-Toe

android project tic tac toe game app

Android Project: Tic-Tac-Toe is a nice game, I guess most of you all are well aware of it. This will be a game for two players. In this android game, users would be putting X and O in the given 9 parts of a box one by one. The first player to arrange X or O in an adjacent line of three wins.

To build this game, you’d need Java and XML for Android Studio. And simply apply the logic on that. This game will have a set of three matches. So, it’ll also have a scoreboard. This scoreboard will show the final result at the end of one complete set.

Upon entering the game they’ll enter their names. And that’s when the game begins. They’ll touch one of the empty boxes present there and get their turn one by one. At the end of the game, there would be a winner declared.

Source Code: Tic Tac Toe Game Project

5. Stopwatch

Android Project: A stopwatch is another simple android project idea that will work the same as a normal handheld timepiece that measures the time elapsed between its activation and deactivation. This application will have three buttons that are: start, stop, and hold.

This application would need to use Java and XML. For this application, we need to set the timer properly as it is initially set to milliseconds, and that should be converted to minutes and then hours properly. The users can use this application and all they’d need to do is, start the stopwatch and then stop it when they are done. They can also pause the timer and continue it again when they like.

6. To Do App

Android Project: This is another very simple project idea for you as a beginner. This application as the name suggests will be a To-Do list holding app. It’ll store the users schedules and their upcoming meetings or events. In this application, users will be enabled to write their important notes as well. To make it safe, provide a login page before the user can access it.

So, this app will have a login page, sign-up page, logout system, and the area to write their tasks, events, or important notes. You can build it in android studio using Java and XML at ease. Using XML you can build the user interface as user-friendly as you can. And to store the users’ data, you can use SQLite enabling the users to even delete the data permanently.

Now for users, they will sign up and get access to the write section. Here the users can note down the things and store them permanently. Users can also alter the data or delete them. Finally, they can logout and also, login again and again whenever they like.

7. Roman to decimal converter

Android Project: This app is aimed at the conversion of Roman numbers to their significant decimal number. It’ll help to check the meaning of the roman numbers. Moreover, it will be easy to develop and will help you get your hands on coding and Android.

You need to use Android Studio, Java for coding and XML for interface. The application will take input from the users and convert them to decimal. Once it converts the Roman no. into decimal, it will show the results on the screen.

The users are supposed to just enter the Roman Number and they’ll get the decimal values on the screen. This can be a good android project for final year students.

8. Virtual Dice Roller

Android Project: Well, coming to this part that is Virtual Dice or a random no. generator. It is another simple but interesting app for computer science students. The only task that it would need to do would be to generate a number randomly. This can help people who’re often confused between two or more things.

Using a simple random number generator you can actually create something as good as this. All you’d need to do is get you hands-on OnClick listeners. And a good layout would be cherry on the cake.

The user’s task would be to set the range of the numbers and then click on the roll button. And the app will show them a randomly generated number. Isn’t it interesting ? Try soon!

9. A Scientific Calculator App

Android Project: This application is very important for you as a beginner as it will let you use your logical thinking and improve your programming skills. This is a scientific calculator that will help the users to do various calculations at ease.

To make this application you’d need to use Android Studio. Here you’d need to use arithmetic logics for the calculations. The user would need to give input to the application that will be in terms of numbers. After that, the user will give the operator as an input. Then the Application will calculate and generate the result on the user screen.

10. SMS App

Android Project: An SMS app is another easy but effective idea. It will let you send the SMS to various no. just in the same way as you use the default messaging application in your phone. This project will help you with better understanding of SMSManager in Android.

For this application, you would need to implement Java class SMSManager in Android. For the Layout you can use XML or JSON. Implementing SMSManager into the app is an easy task, so you would love this.

The user would be provided with the facility to text to whichever number they wish also, they’d be able to choose the numbers from the contact list. Another thing would be the Textbox, where they’ll enter their message. Once the message is entered they can happily click on the send button.

#android tutorials #android application final year project #android mini projects #android project for beginners #android project ideas #android project ideas for beginners #android projects #android projects for students #android projects with source code #android topics list #intermediate android projects #real-time android projects

Shawn  Durgan

Shawn Durgan

1595547778

10 Writing steps to create a good project brief - Mobile app development

Developing a mobile application can often be more challenging than it seems at first glance. Whether you’re a developer, UI designer, project lead or CEO of a mobile-based startup, writing good project briefs prior to development is pivotal. According to Tech Jury, 87% of smartphone users spend time exclusively on mobile apps, with 18-24-year-olds spending 66% of total digital time on mobile apps. Of that, 89% of the time is spent on just 18 apps depending on individual users’ preferences, making proper app planning crucial for success.

Today’s audiences know what they want and don’t want in their mobile apps, encouraging teams to carefully write their project plans before they approach development. But how do you properly write a mobile app development brief without sacrificing your vision and staying within the initial budget? Why should you do so in the first place? Let’s discuss that and more in greater detail.

Why a Good Mobile App Project Brief Matters?

Why-a-Good-Mobile-App-Project-Brief-Matters

It’s worth discussing the significance of mobile app project briefs before we tackle the writing process itself. In practice, a project brief is used as a reference tool for developers to remain focused on the client’s deliverables. Approaching the development process without written and approved documentation can lead to drastic, last-minute changes, misunderstanding, as well as a loss of resources and brand reputation.

For example, developing a mobile app that filters restaurants based on food type, such as Happy Cow, means that developers should stay focused on it. Knowing that such and such features, UI elements, and API are necessary will help team members collaborate better in order to meet certain expectations. Whether you develop an app under your brand’s banner or outsource coding and design services to would-be clients, briefs can provide you with several benefits:

  • Clarity on what your mobile app project “is” and “isn’t” early in development
  • Point of reference for developers, project leads, and clients throughout the cycle
  • Smart allocation of available time and resources based on objective development criteria
  • Streamlined project data storage for further app updates and iterations

Writing Steps to Create a Good Mobile App Project Brief

Writing-Steps-to-Create-a-Good-Mobile-App-Project-Brief

1. Establish the “You” Behind the App

Depending on how “open” your project is to the public, you will want to write a detailed section about who the developers are. Elements such as company name, address, project lead, project title, as well as contact information, should be included in this introductory segment. Regardless of whether you build an in-house app or outsource developers to a client, this section is used for easy document storage and access.

#android app #ios app #minimum viable product (mvp) #mobile app development #web development #how do you write a project design #how to write a brief #how to write a project summary #how to write project summary #program brief example #project brief #project brief example #project brief template #project proposal brief #simple project brief template

Justyn  Ortiz

Justyn Ortiz

1603465200

Oracle Kills 402 Bugs in Massive October Patch Update

Business software giant Oracle is urging customers to update their systems in the October release of its quarterly Critical Patch Update (CPU), which fixes 402 vulnerabilities across various product families.

Well over half (272) of these vulnerabilities open products up to remote exploitation without authentication. That means that the flaw may be exploited over a network without requiring user credentials.

The majority of the flaws are in Oracle Financial Services Applications (53), Oracle MySQL (53), Oracle Communications (52), Oracle Fusion Middleware (46), Oracle Retail Applications (28) and Oracle E-Business Suite (27). But overall, 27 Oracle product families are affected by the flaws. Users can find a patch availability document for each product, available here.

“Oracle continues to periodically receive reports of attempts to maliciously exploit vulnerabilities for which Oracle has already released security patches,” according to the company’s release on Tuesday. “In some instances, it has been reported that attackers have been successful because targeted customers had failed to apply available Oracle patches. Oracle therefore strongly recommends that customers remain on actively-supported versions and apply Critical Patch Update security patches without delay.”

While details of the flaws themselves are scant, two of the critical vulnerabilities disclosed by Oracle rank the highest severity score – 10 out of 10 – on the CVSS scale.

These include a flaw in the self-service analytics component of Oracle Healthcare Foundation, which is a unified healthcare-analytics platform that is part of the Oracle Health Science Applications suite. The flaw (CVE-2020-1953), which can be remotely exploited without requiring any user credentials, requires no user interaction and is easy to exploit, according to Oracle. Affected supported versions include 7.1.1, 7.2.0, 7.2.1 and 7.3.0.

The second severe flaw (CVE-2020-14871) exists in the pluggable authentication module of Oracle Solaris, its enterprise operating system for Oracle Database and Java applications (part of the Oracle Systems risk matrix). The flaw is also remotely exploitable without user credentials, requires no user interaction and is a “low-complexity” attack. Versions 10 and 11 are affected.

Sixty-five of the vulnerabilities also had a CVSS base score of 9.8 (and six had a score of 9.4) out of 10, making them critical in severity.

Oracle did offer some workarounds, advising that for attacks that require certain privileges or access to certain packages, removing the privileges or the ability to access the packages from users that do not need the privileges may help reduce the risk of successful attack. Users can also reduce the risk of successful attack by blocking network protocols required by an attack.

However, both these approaches may break application functionality, and Oracle does not recommend that either approach be considered a long-term solution as neither corrects the underlying problem.

“Due to the threat posed by a successful attack, Oracle strongly recommends that customers apply Critical Patch Update security patches as soon as possible,” according to the company.

Oracle releases its CPUs on the Tuesday closest to the 17th day of January, April, July and October.

Previous quarterly updates have stomped out hundreds of bugs across the company’s product lines, including one in April that patched 405. There are also out-of-band updates; in June for instance, Oracle warned of a critical remote code-execution flaw in its WebLogic Server being actively exploited in the wild.

#vulnerabilities #web security #cpu #critical patch update #cve-2020-14871 #cve-2020-1953 #oracle #oracle communications #oracle e-business suite #oracle financial services applications #oracle fusion middleware #oracle mysql #oracle retail applications #quarterly patch update #remote code execution #security update

TeFi Oracle: Oracle SmartContracts for TeFi Projects

TeFi Oracle

This repository contains the source code for a set of oracle smart contracts running on Terra blockchain.

Contracts

ContractReferenceDescription
hubdocCentral price source for all assets, redirects requests to proxies based on priority and availability
proxy-templatedocTemplate of a contract that implements the proxy standard
proxy-banddocProxy contract for Band Protocol price sources
proxy-chainlinkdocProxy contract for Chainlink price sources
proxy-feeddocCustom proxy contract that allows external sources to feed prices

Development

Environment Setup

  • Rust v1.44.1+
  • wasm32-unknown-unknown target
  • Docker
  1. Install rustup via https://rustup.rs/
  2. Run the following:
rustup default stable
rustup target add wasm32-unknown-unknown

3.   Make sure Docker is installed

Unit / Integration Tests

Each contract contains Rust unit and integration tests embedded within the contract source directories. You can run:

cargo unit-test
cargo integration-test

Compiling

After making sure tests pass, you can compile each contract with the following:

RUSTFLAGS='-C link-arg=-s' cargo wasm
cp ../../target/wasm32-unknown-unknown/release/cw1_subkeys.wasm .
ls -l cw1_subkeys.wasm
sha256sum cw1_subkeys.wasm

Production

For production builds, run the following:

docker run --rm -v "$(pwd)":/code \
  --mount type=volume,source="$(basename "$(pwd)")_cache",target=/code/target \
  --mount type=volume,source=registry_cache,target=/usr/local/cargo/registry \
  cosmwasm/rust-optimizer:0.11.5

or

sh build_release.sh

This performs several optimizations which can significantly reduce the final size of the contract binaries, which will be available inside the artifacts/ directory.

Formatting

Make sure you run rustfmt before creating a PR to the repo. You need to install the nightly version of rustfmt.

rustup toolchain install nightly

To run rustfmt,

cargo fmt

Linting

You should run clippy also. This is a lint tool for rust. It suggests more efficient/readable code. You can see the clippy document for more information. You need to install nightly version of clippy.

Install

rustup toolchain install nightly

Run

cargo clippy --all --all-targets -- -D warnings

Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run with: cargo test --all. For more details, please reference Unit Tests.

Download Details:
Author: terra-money
Source Code: https://github.com/terra-money/tefi-oracle-contracts
License:

#rust  #blockchain  #terra #smartcontract #oracle 

Ananya Gupta

Ananya Gupta

1599222949

5 Steps To Get An Oracle Database Certification

So, do you have to become Oracle Certified? it has been a debatable issue for a short time, but one thing is certain: the Oracle Certification provides an accurate measure of your technical abilities.

Additionally, it gives you a foothold over people competing for the database administration positions you desire. Join Oracle online certification course and get complete guidance

Here are the steps to getting an Oracle Database certification:

  1. Associate Certification

The first step to getting your Oracle is getting the Associate Certification, which needs that the person passes two tests to become an Oracle Certified Associate (OCA). With this qualification, you’ll add junior management as a team member or an application developer. to urge the associate certification, you’ve got to pass in one among the three tests explained below and therefore the final “Oracle Database 11g: Administration I” test.Join best Oracle online training program to improve your skills.

Step 1: Take one among the subsequent three courses

Oracle Database 12c: SQL Fundamentals 1Z0-061

The examination tests ability to make, retrieve, maintain, and edit data during a database. Mainly, this involves a grasp of important database administration concepts like an electronic database. Additionally, the necessity to know and use SQL is extremely important, because the test would require you to demonstrate your SQL programming skills.

Oracle Database SQL Expert 1Z0-047

In general, this is often a complicated version of the “Introduction to Oracle9i SQL” test. you’ll need proficiency in 76 topics to achieve this exam. you would like to possess a high understanding of database objects, control privileges, and system-level queries. The questions require a deep understanding of SQL, and are multiple parts in nature, requiring the application of concepts instead of mere memorization of answers. Experience in database administration will offer you a notable advantage during this test.

Oracle Database 11g: SQL Fundamentals I 1Z0-051

This test is an improved version of the “Introduction to Oracle9i SQL” test. The content is newer and includes set and conditional operators, which are absent within the older version. Therefore, you’d be happier choosing this test over the previous.

Step 2: Oracle Database 11g: Administration I 1Z0-052

The test requires knowledge on the way to found out database environments and secure Oracle instances in any network environment. Other concepts needed to pass this exam include understanding of database backup and recovery, Oracle Database Architecture, also as the configuration of security instances. The questions require the application of concepts, not just memorization of data.

  1. Professional Certification

The professional certification allows you to manage large databases and develop large-scale database applications. In summary, to become an Oracle Certified Professional (OCP), you’ve got to require an instructor-led course, an exam, and a hands-on course.

Step 1: Be an Oracle Certified Associate

You must have the OCA certification as a pre-requisite for this course.

Step 2: Take an Exam

The second step within the OCP certification process is to require a course from a variety of about 50 courses and sit an exam. The list of those courses is out there on the Oracle site. The broad selection means you’ll choose the course that most accurately fits your training requirements. Note that you simply cannot meet the wants of this course through self-study; you’ve got to require an instructor-led class, a virtual class, or learn through training-on-demand.

Step 3: Submission of an Already Completed Course

In this step, you’re required to submit a previously completed course from an inventory of 21 courses. Alternatively, Oracle allows submissions from courses taken within the previous step.

Step 4: Oracle Database 11g: Administration II 1Z0-053

This is the ultimate exam within the OCP certification process. Once you pass this exam, you’ll proceed to the ultimate process.

Step 5: Submit a course completion form
Once you pass this exam, you only need to complete a course submission because of the final step within the OCP certification process.

Master Certification

This is the very best Oracle certification you’ll get. With this qualification, you’ll well-suited to figure in senior levels in IT departments handling sensitive database system issues and applications. you’ll need an OCP certification to urge started. then you’ll take a two-day exam then a hands-on course.

Conclusion:
In general, Oracle Certified database administrators have the knowhow to run databases both at the junior and senior levels, counting on the certification level. Some people might argue that there’s little point to being certified because the process involves the memorization of theoretical concepts and taking a multiple-choice test. However, while there’s credence to the very fact that certification does little to catch up on the shortage of technical competence obtained through experience, it does give validity to such claims. As an Oracle Certified database services, potential employers and clients are more easily convinced of your capabilities within the field.

#oracle online training #oracle online course #oracle online certification course #oracle certification course #oracle course #oracle training