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Version checking used in hibernate when more then one thread trying to access same data. For example : User A edit the row of the TABLE for update ( In the User Interface changing data This is user thinking time) and in the same time User B edit the same record for update and click the update. Then User A click the Update and update done. Change made by user B is gone. In hibernate you can prevent slate object updation using version checking. Check the version of the row when you are updating the row. Get the version of the row when you are fetching the row of the TABLE for update. On the time of updation just fetch the version number and match with your version number (on the time of fetching).

Containers are the interface between a component and the low-level, platform-specific functionality that supports the component. Before it can be executed, a web, enterprise bean, or application client component must be assembled into a Java EE module and deployed into its container. The assembly process involves specifying container settings for each component in the Java EE application and for the Java EE application itself. Container settings customize the underlying support provided by the Java EE server, including such services as security, transaction management, Java Naming and Directory Interface (JNDI) API lookups, and remote connectivity. Here are some of the highlights. The Java EE security model lets you configure a web component or enterprise bean so that system resources are accessed only by authorized users. The Java EE transaction model lets you specify relationships among methods that make up a single transaction so that all methods in one transaction are treated as a

I have opened a DEMAT account with HDFC Securities in 2019 as HDFC group is well known for the customer services and I also hold a salary account with HDFC Bank, DEMAT account with the following conditions/offers as expressed by the executive. Trading Account Opening Charges (One Time) :  ₹999 (At that time it offered on lower price, I forget the exact price) Trading Annual Maintenance Charges AMC (Yearly Fee) : ₹0 Demat Account Opening Charges (One Time) : ₹0 Demat Account Annual Maintenance Charges AMC (Yearly Fee) : ₹750, nil if portfolio value below ₹2 lacs. Equity Delivery : 0.50% Equity Intraday : 0.05% Equity Futures : 0.05% Equity Options : ₹100 per lot or 1% of the premium (whichever is higher) Currency Futures : ₹23 per contract Currency Options : ₹20 per contract Commodity Futures : 0.02% for Intraday / 0.025% for positional Commodity Options : 0.02% for Intraday / 0.025% for positional It was going good but after 2-3 months I got to know that there are som

A bonus share issue is an offer of free extra shares to existing shareholders. A company may decide to distribute further shares as an alternative to increasing the dividend payout. When a company issues bonus shares, the number of shares held by the investor increases in proportion. For example, 1:1 bonus means the number of shares double. 4:5 bonus means for every 5 shares held by an investor, he/she will get 4 shares. The value of investment remains the same even after a bonus share issue. For example, an investor has 50 shares, the company issues 1:1 bonus. Then the shares by the investor would double and become 100. The price of the shares of that company at that time was Rs. 100. So before bonus issue, · No. of shares = 50 · Share price = Rs. 100 · Value of Investment = Rs. 5,000 And after bonus issue, · No. of shares = 1000 · Share price = Rs. 50 · Value of Investment = Rs. 5,000 This is so because when a bonus share is announced the price of the shares of that company gets redu

Peter Lynch (born January 19, 1944) is an American investor, mutual fund manager, and philanthropist. As the manager of the Magellan Fund at Fidelity Investments between 1977 and 1990, Lynch averaged a 29.2% annual return, consistently more than doubling the S&P 500 stock market index and making it the best-performing mutual fund in the world. During his 13 year tenure, assets under management increased from $18 million to $14 billion. He also co-authored a number of books and papers on investing and coined a number of well known mantras of modern individual investing strategies, such as Invest in what you know and ten bagger. Lynch is consistently described as a "legend" by the financial media for his performance record. Base on his career I have compiled his investing rules here. 25 GOLDEN RULES by @Peter Lynch 1: Nobody can predict interest rates, the future direction of the economy or the stock market. Dismiss all such forecasts & concentrate on what's actual

There are several intrinsic features of a Blockchain that lend it its power and allows it to record and transfer value over the internet in a peer-to-peer manner: Near real time: It enables near real time settlement of recorded transactions, removing friction, and reducing risk No intermediary: It is based on cryptographic proof, allowing any two parties to transact directly with each other, without the need for a trusted third party. Distributed ledger: The peer-to-peer distributed network records a public history of transactions, making Blockchain distributed and highly available. Irreversibility: It contains certain and verifiable record of every single transaction ever made that cannot be altered without altering the entire chain. This prevents double spending, fraud, abuse, and manipulation of transactions. Censorship resistant: Crypto economics ensures that Blockchain continues pumping out new blocks and that blocks are not being reverted or altered. The Gartner hype cycle p