2D CADs are mainly used to create detailing and drafting whereas SOLIDWORKS helps in designing and development in 3D which helps in better visual understanding. It also helps to create drafting and detailed manufacturing drawings.
Yes, SOLIDWORKS allows to import 2D CAD Files such as DXF and DWG files and 3D Models can be created using the 2D views from DXF/DWG files as a reference inside SOLIDWORKS environment.
Yes, SOLIDWORKS Supports import of Other 3D CAD Files such as Autodesk Inventor, Pro/ENGINEER and Creo Parametric, Solid Edge, Unigraphics. It also supports import of Neutral Files such as IGES/IGS, STEP, Parasolid etc.

The Feature Works software in SOLIDWORKS recognizes features on an imported solid body in a SOLIDWORKS part document.
Recognized features are the same as features that you create using the SOLIDWORKS software. You can edit the definition of recognized features to change their parameters. For features that are based on sketches, after you recognize the features, you can edit the sketches from the SOLIDWORKS FeatureManager design tree to change the geometry of the features.
However, it should be noted that not all features are recognized by FeatureWorks. Some geometry may not be recognized due to complexity.
Starting from SOLIDWORKS 2017, 3D Interconnect replaces SOLIDWORKS current translation capabilities with new technology and workflows for working with third-party native CAD data.
You can:
Insert proprietary CAD data directly into a SOLIDWORKS assemblywithout converting it to a SOLIDWORKS
Open the proprietary 3D CAD format in the SOLIDWORKS softwarewith its associative link to the original
Update changes in the SOLIDWORKS file if you update theproprietary CAD data in its authoring application by maintaining all downstream features created in SOLIDWORKS.
Breakthe link of the inserted part file with the original part
With the technology you can work with other 3D CAD in same native format without need of translation to SOLIDWORKS Files.
SOLIDWORKS Comes with Inbuilt material library which includes Steel, Iron, Aluminium, Copper, Titanium, Zinc, Plastics, non – Metals such as Air, Water, Rubber, Wood etc.
All the materials include mechanical properties such as Elastic Modulus, Tensile Strength, Mass Density, Yield Strength, Thermal Conductivity etc.

Yes, SOLIDWORKS Drawings can be exported to DXF/DWG formats to open in 2D CAD Softwares such as Draftsight, AutoCAD etc.
No, It is not necessary to install SOLIDWORKS unless you want to make changes to the models.
For anyone who needs to view and interrogate 3D design data. Whether you are involved in commercial manufacture, purchasing, a maker or a student, eDrawings helps you to communicate, share and collaborate with 3D data with an easily shareable lightweight file in its own viewer.
SOLIDWORKS is an easy-to-use intiutive user interface software. Along with part, assembly, and 2D drawing functionality, specialized tools are included for sheet metal, weldments, surfacing, molds, product configuration etc.
Yes, SOLIDWORKS has a portfolio of Simulation solutions which is integrated directly inside SOLIDWORKS 3D Modeling enviroment.
SOLIDWORKS Simulation is an easy-to-use portfolio of structural analysis
tools that use Finite Element Analysis (FEA) to predict a product’s real-world physical behavior by virtually testing CAD models. The portfolio provides linear, non-linear static and dynamic analysis capabilities which can be purchased as per requirements and integrated with SOLIDWORKS.