Database management systems are used to store and to access information.
In <span>the Relational Database Management System </span>(RDBMS), all the data is in the form of simple columns and rows in a table. Structured Query Language (SQL) is is the standard query language for RDBMS. Some of the disadvantages of RDBMS are: not enough storage area to handle data such as images, digital and audio/video, do not provide good support for nested structures,not much efficient and effective integrated support.
<span>The
term object oriented database management systems (OODBMS) refers to a wide variety of different database technologies
that were developed in order to overcome some of the limitations of
relational databases.</span>
Answer: A) systems analysis phase of the SDLC.
Explanation:
In accordance with system development life cycle(SDLC) , analysis phase is the stage where all the requirement and materials for the system are collected and ordered.The requirements are in the form of input and output which are extracted and documented to provide clear vision of outcome.
- Other options are incorrect because design phase is for designing the format ans structure of system through input components. Planning and selection stage is making scheme through opting correct requirement for system.
- Implementation and operation phase is the stage of implementing the components on system structure to make them perform their respective tasks. Logic modelling level is defining inputs , components, outputs in logical manner so that they provide desired result operating.
- Thus, the correct operation is option(A).
The employee would access an intranet to maintain security.
Answer:
Interference of signal and the range between the user and the access point.
Explanation:
Elevators, specifically those with high voltage, are notoriously known for being a source of very strong magnetic fields. They produce a lot of harmonics that causes signal interference and noise. Whenever there is any kind of noise in a network, it causes huge intermittent connection. Also, the farther away the user is from the router or the AP, the weaker the signals and the more the intermittencies. The user is recommended to be within the edges if the range limit.
