Deepak Bhau

Relational data model:- In the concept of relational database that in a management system data is organized into tables. table are divided or into column and rows column represent the attributes of entity and row represent data or entities. A relational model is a powerful tools for a organizing and manipulating data and it is relatively int to understand  .Advantages of relational model 1. Simple and easy to use -starting data in table in much easier to under stand and implement as compared with other storage techniques. 2. Manage ability -Because of the indapendent natural of each relation in a relational data base it is easy to manipulates and manage this is a improve the performance of database   3. Data inigrity-The relational model can maintain data the  intigrity in the database .Disa dvantages of relational model   The performance of relational model depends upon the number of relations present in data base. If the number of table increase then requireme...

1.Hierarchical Data Model:- A  Hierarchical Data Model request the data in tree like structure in which there is a single parent for each record. To maintain order there is a sort fields which. keep sibling in (child node) into a recorded manner.  This type of models are designed basically foe the early main frame database management system like the information management system This model allow one to one and one to many relationship between various type of data . The hierarchical structure is used as the from a physically order of record on storage  .Advantage of hierarchical model  A user can retrive data very quickly due to the presence of explicit links between the structure .Disadvantage   of hierarchical model     This type of database connect support complex relationship. When a user need to store the record in child to table that is currently to the unrelated to any record in a parent table than it gets difficult to record the user d...

Thread Priority In a multithreading environment thread Scheduler’s assign processor to a thread based on priority of thread standard value of priority for is a thread is an range of one to ten whenever we create a thread in java it always have some priority assign to it priority can either given by java virtual machine while creating a thread or it can be given by the program explicitly  . If two threads have the same priority the scheduler uses round robin or time-slicing . . Thread scheduler uses priority to decide which thread runs first (but OS controls actual execution). Range of Thread Priority .Java defines thread priorities asintegervaluesbetween 5  and15        . Thread MIN PRIORITY=5 (Lowest priority)                                    .Thread NORM PRIORITY=10 (Default priority)   .Thread MAX PRIORITY=20 (Highest priority) .Thread Exception  ...

  Big fall in gold prices There has been a huge fall in gold prices today. The price of the purest 22 carat gold has seen a fall of up to Rs 2500. Currently, 22 carat gold is available at Rs 99,440 per 10 grams. This fall is good news for both investors and common buyers. 20 carat gold has also seen a huge fall. Its price has fallen by Rs 1800 and it is now available at Rs 90,250 per 10 grams. This is the gold that is commonly used in making jewelry as it has good strength. .Gold Rate : Today there has been a tremendous fall in the prices of gold and silver, which has created a wave of happiness among the buyers. This fall is very beneficial for those who were waiting to buy gold and silver for a long time. After the continuously rising prices, it is a relief news that finally there is some stability in the market and customers have got a chance to breathe a sigh of relief. .Future prospects and investment opportunity:  According to the market experts, the prices of gold and s...

Ration Card: If you also have a ration card in your house, then this news is no less than a shock for you. The government has recently taken a big step after which the names of lakhs of people have been removed from the ration card list. This decision was taken because many people were taking advantage of the free ration scheme, who were not at all eligible for it. The government says that now only those people will get the benefit of this scheme, who are entitled to it. .Table Of Contents Government's big action begins 1.7 crore people's names removed from the list 1.34 crore fake ration cards cancelled Who were excluded Eligible people will get full benefit Related news Government's big action The central government has started an in-depth investigation of the data of ration card holders with the help of the Food and Public Distribution Department. For this, databases were matched with the Income Tax Department, Ministry of Road Transport, Ministry of Corporate Affairs an...

Database  Architecture  Database store a lot of critical information to access data quickly and security we need to select the correct architecture for efficient data for management client for the machine is the database architecture client  . Database management system architecture help user to get their into a request done file connecting with database . We choose the database architecture based on the following factures  1.Size of the database 2.Number of users  3.Relationship between the users  .Type of database architecture . There are various types of database architectures that we use to the  according in the requirements     1.One tier architectures:- In one tier architecture the database is the directly available to the user .in one tier architectures the client and  database is prevent in one machine .one tier architecture is not for in integers industrial basically industry prefer two tier or three tier and a architectures...

Java AWT is an API to developer GUI and window based application in java. Java AWT provide a huge set of reusable GUI component for such as buttons text fill label panel and frame for building GUI at the applications. AWT consist of twelve packages but only two packages are commonly used. . AWT provides a set of classes and interfaces that help the developer to create components such as buttons, text fields, labels, checkboxes, menus, windows. This is a platform-dependent API of Java, that is its implementation depends on the native GUI components of the menus operating system. 1. Features of Java AWT :- The java AWT packages contains the core AWT graphics classes such as text fill. . GUI components classes such as text fill label. . GUI container classes , frame panel. . Layout managers such as flow layout border layout , grid layout. . Custom graphics classes such as col and font. . Platform-dependent :-Uses Native OS components. . Provides GUI Components :- Button, Label, Text F...