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With the help of a diagram defines the typical element modules of a DBMS?
The functional elements of a database system can be widely divided into: 1) Storage manager and 2) query processor
1) Storage manager components include:(i) Authorization and integrity manager to test integrity constraints and authorized access to data. (ii) Transaction manager to ensure in which database remains in a consistent state. (iii) File manager to manage disk storage space. (iv) Buffer manager is responsible for buffering data.
2) The query processor component includes: (i) DDL interpreter to interpret DDL statements (ii) DML compiler that translation DML queries into query evaluation plan for query evaluation engine. (iii) Query evaluation engine execute low level instructions produced through DML compiler.
A database is to be constructed to remain track of the teams and games of a sport league. A team has a number of players, not all of whom participate in every game. It is desired
ERD Diagram of Medical Recruitment Agency?
What is a relationship called when it is maintained between two entities? A relationship is called Binary relationship when it is maintained between two entities.
In Database software have only pure security or some dis secured by administrator?
List the internal controls that should be in effect solely because a EDP system is employed, classifing them as (1) Those controls pertaining to input of information and (2) All ot
This assignment concerns the Research database. The database ER model is shown above, where attributes are omitted for clarity. The relational model for the database is: Departm
Mappings between Levels and Data Independence The 3 levels of abstraction in the database do not exist separately of each other. There must be some correspondence, or mapping
DDL Compiler The DDL compiler changes the data definition statements (such as CREATE TABLE .... in SQL) into a set of tables having metadata tables. These tables have infor
#quCreate a database design specification (Enhanced Entity Relationship Diagram (EERD) and Relational Data Model (RDM)) from the given business description. The RDM must be in 3rd
Explain the EXISTS and UNIQUE functions of SQL. Give an example for each? EXISTS: The EXISTS function takes one parameter that is a SQL statement. If any records exist which
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