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What are the features of embedded SQL? Explain.
Embedded SQL - SQL could be implemented within two ways. It can be used interactively or embedded in a host language or through using API. The use of SQL commands inside a host language (e.g., C, Java, etc.) program is known as embedded query language or Embedded SQL. While same capabilities are supported for a variety of host languages, the syntax sometimes varies. A few of the features of embedded SQL are:
SQL statements could be used while a statement in the host language is permitted. It merges the strengths of two programming environments, the procedural characteristics of host languages and non-procedural character of SQL.
SQL statements could refer to variables (must be prefixed by a colon in SQL statements) described in the host program.
Special program variables (known as null indicators) are used to assign and retrieve the NULL values to and from the database.
The facilities available by the interactive query language are also mechanically available to the host programs.
Embedded SQL along with host languages could be used to accomplish extremely complex and complex data access and manipulation tasks.
Define Boyce codd normal form A relation schema R is in BCNF with respect to a set F of functional dependencies if, for all functional dependencies in F + of the form.α ->β.
Hierarchical model is also known by? A hierarchical model is also known as a Tree structure.
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
how to implement hyrise in C plus plus
What is a Built-in A notation of identity is built-into the data model or programming language and no user-supplied identifier is needed. This form of identity is used in objec
Multiple column Queries: Syntax: SELECT COLUMN1, COL2,...... FROM TABLE WHERE (COLUMN1, COL2, ...) IN (SELECT COLUMN1, COL2,.... FROM TABLE WHERE );
1. Based on the dependency diagram, create a database whose tables are in at least 2NF, showing the dependency diagram for each table (as shown in class). Label the types of depe
Removing a Synonym: DROP SYNONYM D30;
What is transaction? Transaction is a unit of program implementation that accesses and possibly updated several data items.
A database will be made to store information about patients in a hospital. On arrival, each patient’s personal details (name, address, and telephone number) are recorded where poss
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