Keeping pace with rapid advancements in medical science is imperative for doctors and paramedics so that they are at par with modern militaries and the best global practices in healthcare, he added. Our doctors and paramedic staff have been frontline warriors against Covid-19 and exemplary commitment and resolve for the safety and well-being of the people of Pakistan," he remarked. "The AMC has always answered the call of duty during natural calamities, both inland and abroad. He also lauded the contributions of AMC in ensuring high standards of healthcare during peace and war. Speaking on the occasion, Gen Bajwa said that installation of the first-ever three-star female general as the colonel commandant of AMC was "a matter of immense pride for the Pakistan Army and the country". The COAS also laid a wreath at the Yadgar-i-Shuhada and offered prayers.
To generate the necessary database objects for the primary key autogeneration, use CayenneModeler and follow the instructions given here.Lieutenant General Nigar Johar has become the first ever female general to be appointed the colonel commandant of Army Medical Corps (AMC), the military's media affairs wing said in a statement on Friday.Īccording to the Inter-Services Public Relations (ISPR) statement, Chief of Army Staff (COAS) Gen Qamar Javed Bajwa pinned the badges of rank to formally install Lt Gen Johar during a visit to the AMC centre, Abbotabad. OpenBase Adapter: uses OpenBase specific NEWID mechanism.SQLServer, Sybase Adapters: use a strored procedure tied to AUTO_PK_TABLE lookup table.MySQL, PostgreSQL, HSQL Adapters: use select/update from a special AUTO_PK_TABLE lookup table.Adapters shipped with Cayenne use the following default PK generation strategies: Generation mechanism depends on the DbAdapter used and can be customized by users by subclassing one of the included adapters. When a new DataObject is saved, and its properties and relationships do not contain primary key values, Cayenne will attempt to automatically generate a key value. To avoid doing that Cayenne assigns each object an ObjectId that internally handles the details of primary key handling. This means that creating a property in a persistent object that corresponds to a primary key is an artificial step. Normally this is a unique sequential number that identifies a row in the database.
In most cases, the database primary key is a purely relational concept that has no correspondence in the object model. Currently MySQL and SQLServer adapters have this feature turned on by default. For this mechanism to be invoked, the DbEntity primary key generation must be marked as "Database-Generated" in the Modeler. Cayenne supports such primary keys out of the box. This feature is called "auto increment" or "identity column". Sometimes databases have their own proprietary mechanism to generate a primary key when a new row is inserted. Primary Key Provided by Database on INSERT Instead the value is automatically derived by Cayenne from a primary key of a related object using a relationship. In such cases DataObject normally does not contain a property mapped to a PK column. This is normally the case with "join" tables used to resolve many-to-many relationships.
Primary Key Derived From RelationshipĪ primary key column of a table may depend on a primary key column of another table. The value of this property will be saved to the database. The Java class implementing DataObject will contain a property described by this ObjAttribute. Each primary key column (DbAttribute) will have an ObjAttribute mapped to it. In such cases primary key handling is no different from handling any other persistent attributes. Sometimes this makes sense, for example if a primary key column contains meaningful data like a Social Security Number. DataObjects can provide their own values for the primary key columns.